From a561b16a28c820e91c7780de8ac2b9c1be49c2bb Mon Sep 17 00:00:00 2001
From: Yoshi Automation Bot <yoshi-automation@google.com>
Date: Wed, 3 Nov 2021 09:18:15 -0700
Subject: [PATCH] chore: fix java 17 checks (#243)

This PR was generated using Autosynth. :rainbow:

Synth log will be available here:
https://source.cloud.google.com/results/invocations/4f32d3ba-e72a-4533-98ea-d1c10029ad8d/targets

- [ ] To automatically regenerate this PR, check this box. (May take up to 24 hours.)

PiperOrigin-RevId: 401879979
Source-Link: https://github.com/googleapis/googleapis/commit/177c62af7f181a42b91def98dec2e46efdb07b5e
PiperOrigin-RevId: 399862673
Source-Link: https://github.com/googleapis/googleapis/commit/de988112503e41b044e2b3f035d101a4f3d7c4ba
PiperOrigin-RevId: 399105877
Source-Link: https://github.com/googleapis/googleapis/commit/161fdb449f454c4fa709dea8858b034e189b4431
---
 .kokoro/dependencies.sh                       | 10 +-
 .../src/main/java/com/google/api/Advice.java  |  4 +-
 .../java/com/google/api/AuthProvider.java     | 20 ++--
 .../java/com/google/api/AuthRequirement.java  |  8 +-
 .../com/google/api/AuthenticationRule.java    |  4 +-
 .../main/java/com/google/api/BackendRule.java | 12 +--
 .../src/main/java/com/google/api/Billing.java |  4 +-
 .../java/com/google/api/ConfigChange.java     | 12 +--
 .../main/java/com/google/api/ContextRule.java |  4 +-
 .../src/main/java/com/google/api/Control.java |  4 +-
 .../com/google/api/CustomHttpPattern.java     |  8 +-
 .../java/com/google/api/Documentation.java    | 16 ++--
 .../com/google/api/DocumentationRule.java     | 12 +--
 .../main/java/com/google/api/Endpoint.java    |  8 +-
 .../main/java/com/google/api/HttpBody.java    | 18 ++--
 .../main/java/com/google/api/HttpRule.java    | 12 +--
 .../main/java/com/google/api/JwtLocation.java |  4 +-
 .../java/com/google/api/LabelDescriptor.java  |  8 +-
 .../java/com/google/api/LogDescriptor.java    | 12 +--
 .../src/main/java/com/google/api/Logging.java |  4 +-
 .../src/main/java/com/google/api/Metric.java  |  4 +-
 .../java/com/google/api/MetricDescriptor.java | 20 ++--
 .../main/java/com/google/api/MetricRule.java  |  4 +-
 .../com/google/api/MonitoredResource.java     |  4 +-
 .../api/MonitoredResourceDescriptor.java      | 16 ++--
 .../main/java/com/google/api/Monitoring.java  |  4 +-
 .../com/google/api/OAuthRequirements.java     |  4 +-
 .../src/main/java/com/google/api/Page.java    |  8 +-
 .../main/java/com/google/api/Property.java    |  8 +-
 .../main/java/com/google/api/QuotaLimit.java  | 24 ++---
 .../com/google/api/ResourceDescriptor.java    | 16 ++--
 .../com/google/api/ResourceReference.java     |  8 +-
 .../src/main/java/com/google/api/Service.java | 16 ++--
 .../java/com/google/api/SystemParameter.java  | 12 +--
 .../com/google/api/SystemParameterRule.java   |  4 +-
 .../src/main/java/com/google/api/Usage.java   |  4 +-
 .../main/java/com/google/api/UsageRule.java   |  4 +-
 .../java/com/google/api/VisibilityRule.java   |  8 +-
 .../java/com/google/cloud/audit/AuditLog.java | 12 +--
 .../cloud/audit/AuthenticationInfo.java       | 16 ++--
 .../google/cloud/audit/AuthorizationInfo.java |  8 +-
 .../google/cloud/audit/RequestMetadata.java   | 12 +--
 .../audit/ServiceAccountDelegationInfo.java   |  8 +-
 .../com/google/logging/type/HttpRequest.java  | 28 +++---
 .../longrunning/CancelOperationRequest.java   |  4 +-
 .../longrunning/DeleteOperationRequest.java   |  4 +-
 .../longrunning/GetOperationRequest.java      |  4 +-
 .../longrunning/ListOperationsRequest.java    | 12 +--
 .../longrunning/ListOperationsResponse.java   |  4 +-
 .../com/google/longrunning/Operation.java     |  4 +-
 .../com/google/longrunning/OperationInfo.java |  8 +-
 .../longrunning/WaitOperationRequest.java     |  4 +-
 .../main/java/com/google/rpc/BadRequest.java  |  8 +-
 .../main/java/com/google/rpc/DebugInfo.java   |  4 +-
 .../main/java/com/google/rpc/ErrorInfo.java   |  8 +-
 .../src/main/java/com/google/rpc/Help.java    |  8 +-
 .../java/com/google/rpc/LocalizedMessage.java |  8 +-
 .../com/google/rpc/PreconditionFailure.java   | 12 +--
 .../java/com/google/rpc/QuotaFailure.java     |  8 +-
 .../main/java/com/google/rpc/RequestInfo.java |  8 +-
 .../java/com/google/rpc/ResourceInfo.java     | 16 ++--
 .../src/main/java/com/google/rpc/Status.java  |  4 +-
 .../google/rpc/context/AttributeContext.java  | 96 +++++++++----------
 .../main/java/com/google/type/Decimal.java    |  4 +-
 .../src/main/java/com/google/type/Expr.java   | 16 ++--
 .../java/com/google/type/LocalizedText.java   |  8 +-
 .../src/main/java/com/google/type/Money.java  |  4 +-
 .../java/com/google/type/PhoneNumber.java     | 12 +--
 .../java/com/google/type/PostalAddress.java   | 32 +++----
 .../main/java/com/google/type/TimeZone.java   |  8 +-
 .../src/main/proto/google/api/httpbody.proto  | 10 +-
 synth.metadata                                |  4 +-
 synth.py                                      |  1 +
 73 files changed, 382 insertions(+), 377 deletions(-)

diff --git a/.kokoro/dependencies.sh b/.kokoro/dependencies.sh
index f18c6b8d..3371515e 100755
--- a/.kokoro/dependencies.sh
+++ b/.kokoro/dependencies.sh
@@ -38,15 +38,13 @@ function determineMavenOpts() {
       | sed -E 's/^(1\.[0-9]\.0).*$/\1/g'
   )
 
-  case $javaVersion in
-    "17")
+  if [[ $javaVersion == 17* ]]
+    then
       # MaxPermSize is no longer supported as of jdk 17
       echo -n "-Xmx1024m"
-      ;;
-    *)
+  else
       echo -n "-Xmx1024m -XX:MaxPermSize=128m"
-      ;;
-  esac
+  fi
 }
 
 export MAVEN_OPTS=$(determineMavenOpts)
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Advice.java b/proto-google-common-protos/src/main/java/com/google/api/Advice.java
index 4fcfe894..f6971ca3 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Advice.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Advice.java
@@ -174,7 +174,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, description_);
     }
     unknownFields.writeTo(output);
@@ -186,7 +186,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, description_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/AuthProvider.java b/proto-google-common-protos/src/main/java/com/google/api/AuthProvider.java
index 5706114a..053bf695 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/AuthProvider.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/AuthProvider.java
@@ -612,19 +612,19 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(id_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, id_);
     }
-    if (!getIssuerBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(issuer_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, issuer_);
     }
-    if (!getJwksUriBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(jwksUri_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, jwksUri_);
     }
-    if (!getAudiencesBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(audiences_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 4, audiences_);
     }
-    if (!getAuthorizationUrlBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(authorizationUrl_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, authorizationUrl_);
     }
     for (int i = 0; i < jwtLocations_.size(); i++) {
@@ -639,19 +639,19 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(id_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, id_);
     }
-    if (!getIssuerBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(issuer_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, issuer_);
     }
-    if (!getJwksUriBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(jwksUri_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, jwksUri_);
     }
-    if (!getAudiencesBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(audiences_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, audiences_);
     }
-    if (!getAuthorizationUrlBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(authorizationUrl_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, authorizationUrl_);
     }
     for (int i = 0; i < jwtLocations_.size(); i++) {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/AuthRequirement.java b/proto-google-common-protos/src/main/java/com/google/api/AuthRequirement.java
index ad44cb50..9f7637bd 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/AuthRequirement.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/AuthRequirement.java
@@ -258,10 +258,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getProviderIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(providerId_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, providerId_);
     }
-    if (!getAudiencesBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(audiences_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, audiences_);
     }
     unknownFields.writeTo(output);
@@ -273,10 +273,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getProviderIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(providerId_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, providerId_);
     }
-    if (!getAudiencesBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(audiences_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, audiences_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/AuthenticationRule.java b/proto-google-common-protos/src/main/java/com/google/api/AuthenticationRule.java
index 24771d21..7c4d9499 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/AuthenticationRule.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/AuthenticationRule.java
@@ -349,7 +349,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, selector_);
     }
     if (oauth_ != null) {
@@ -370,7 +370,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, selector_);
     }
     if (oauth_ != null) {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/BackendRule.java b/proto-google-common-protos/src/main/java/com/google/api/BackendRule.java
index 4be0d283..78cb9c12 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/BackendRule.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/BackendRule.java
@@ -830,10 +830,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, selector_);
     }
-    if (!getAddressBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(address_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, address_);
     }
     if (deadline_ != 0D) {
@@ -855,7 +855,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (authenticationCase_ == 8) {
       output.writeBool(8, (boolean) ((java.lang.Boolean) authentication_));
     }
-    if (!getProtocolBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(protocol_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 9, protocol_);
     }
     unknownFields.writeTo(output);
@@ -867,10 +867,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, selector_);
     }
-    if (!getAddressBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(address_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, address_);
     }
     if (deadline_ != 0D) {
@@ -894,7 +894,7 @@ public int getSerializedSize() {
           com.google.protobuf.CodedOutputStream.computeBoolSize(
               8, (boolean) ((java.lang.Boolean) authentication_));
     }
-    if (!getProtocolBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(protocol_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(9, protocol_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Billing.java b/proto-google-common-protos/src/main/java/com/google/api/Billing.java
index 2a9364ef..f15b3324 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Billing.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Billing.java
@@ -471,7 +471,7 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getMonitoredResourceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(monitoredResource_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, monitoredResource_);
       }
       for (int i = 0; i < metrics_.size(); i++) {
@@ -486,7 +486,7 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getMonitoredResourceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(monitoredResource_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, monitoredResource_);
       }
       {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/ConfigChange.java b/proto-google-common-protos/src/main/java/com/google/api/ConfigChange.java
index 89690f08..1529cd7d 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/ConfigChange.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/ConfigChange.java
@@ -440,13 +440,13 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getElementBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(element_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, element_);
     }
-    if (!getOldValueBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(oldValue_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, oldValue_);
     }
-    if (!getNewValueBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(newValue_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, newValue_);
     }
     if (changeType_ != com.google.api.ChangeType.CHANGE_TYPE_UNSPECIFIED.getNumber()) {
@@ -464,13 +464,13 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getElementBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(element_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, element_);
     }
-    if (!getOldValueBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(oldValue_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, oldValue_);
     }
-    if (!getNewValueBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(newValue_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, newValue_);
     }
     if (changeType_ != com.google.api.ChangeType.CHANGE_TYPE_UNSPECIFIED.getNumber()) {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/ContextRule.java b/proto-google-common-protos/src/main/java/com/google/api/ContextRule.java
index 0375f754..4f783a81 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/ContextRule.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/ContextRule.java
@@ -483,7 +483,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, selector_);
     }
     for (int i = 0; i < requested_.size(); i++) {
@@ -509,7 +509,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, selector_);
     }
     {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Control.java b/proto-google-common-protos/src/main/java/com/google/api/Control.java
index 931b5648..56c807a7 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Control.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Control.java
@@ -175,7 +175,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getEnvironmentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(environment_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, environment_);
     }
     unknownFields.writeTo(output);
@@ -187,7 +187,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getEnvironmentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(environment_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, environment_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/CustomHttpPattern.java b/proto-google-common-protos/src/main/java/com/google/api/CustomHttpPattern.java
index 2e1fe6a6..6bd34a47 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/CustomHttpPattern.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/CustomHttpPattern.java
@@ -228,10 +228,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getKindBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(kind_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, kind_);
     }
-    if (!getPathBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(path_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, path_);
     }
     unknownFields.writeTo(output);
@@ -243,10 +243,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getKindBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(kind_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, kind_);
     }
-    if (!getPathBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(path_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, path_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Documentation.java b/proto-google-common-protos/src/main/java/com/google/api/Documentation.java
index b04c3308..9e8f1564 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Documentation.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Documentation.java
@@ -594,22 +594,22 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSummaryBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(summary_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, summary_);
     }
-    if (!getOverviewBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(overview_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, overview_);
     }
     for (int i = 0; i < rules_.size(); i++) {
       output.writeMessage(3, rules_.get(i));
     }
-    if (!getDocumentationRootUrlBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(documentationRootUrl_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 4, documentationRootUrl_);
     }
     for (int i = 0; i < pages_.size(); i++) {
       output.writeMessage(5, pages_.get(i));
     }
-    if (!getServiceRootUrlBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceRootUrl_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 6, serviceRootUrl_);
     }
     unknownFields.writeTo(output);
@@ -621,22 +621,22 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSummaryBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(summary_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, summary_);
     }
-    if (!getOverviewBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(overview_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, overview_);
     }
     for (int i = 0; i < rules_.size(); i++) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(3, rules_.get(i));
     }
-    if (!getDocumentationRootUrlBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(documentationRootUrl_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, documentationRootUrl_);
     }
     for (int i = 0; i < pages_.size(); i++) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(5, pages_.get(i));
     }
-    if (!getServiceRootUrlBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceRootUrl_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, serviceRootUrl_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/DocumentationRule.java b/proto-google-common-protos/src/main/java/com/google/api/DocumentationRule.java
index c1d65bba..4e2091e6 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/DocumentationRule.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/DocumentationRule.java
@@ -299,13 +299,13 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, selector_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, description_);
     }
-    if (!getDeprecationDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(deprecationDescription_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, deprecationDescription_);
     }
     unknownFields.writeTo(output);
@@ -317,13 +317,13 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, selector_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, description_);
     }
-    if (!getDeprecationDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(deprecationDescription_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, deprecationDescription_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Endpoint.java b/proto-google-common-protos/src/main/java/com/google/api/Endpoint.java
index e74fd93f..50832fdb 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Endpoint.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Endpoint.java
@@ -373,7 +373,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     for (int i = 0; i < aliases_.size(); i++) {
@@ -382,7 +382,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (allowCors_ != false) {
       output.writeBool(5, allowCors_);
     }
-    if (!getTargetBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(target_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 101, target_);
     }
     unknownFields.writeTo(output);
@@ -394,7 +394,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     {
@@ -408,7 +408,7 @@ public int getSerializedSize() {
     if (allowCors_ != false) {
       size += com.google.protobuf.CodedOutputStream.computeBoolSize(5, allowCors_);
     }
-    if (!getTargetBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(target_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(101, target_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/HttpBody.java b/proto-google-common-protos/src/main/java/com/google/api/HttpBody.java
index 40b85192..91b0371d 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/HttpBody.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/HttpBody.java
@@ -38,9 +38,10 @@
  *       google.api.HttpBody http_body = 2;
  *     }
  *     service ResourceService {
- *       rpc GetResource(GetResourceRequest) returns (google.api.HttpBody);
- *       rpc UpdateResource(google.api.HttpBody) returns
- *       (google.protobuf.Empty);
+ *       rpc GetResource(GetResourceRequest)
+ *         returns (google.api.HttpBody);
+ *       rpc UpdateResource(google.api.HttpBody)
+ *         returns (google.protobuf.Empty);
  *     }
  * Example with streaming methods:
  *     service CaldavService {
@@ -311,7 +312,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getContentTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(contentType_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, contentType_);
     }
     if (!data_.isEmpty()) {
@@ -329,7 +330,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getContentTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(contentType_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, contentType_);
     }
     if (!data_.isEmpty()) {
@@ -494,9 +495,10 @@ protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.Build
    *       google.api.HttpBody http_body = 2;
    *     }
    *     service ResourceService {
-   *       rpc GetResource(GetResourceRequest) returns (google.api.HttpBody);
-   *       rpc UpdateResource(google.api.HttpBody) returns
-   *       (google.protobuf.Empty);
+   *       rpc GetResource(GetResourceRequest)
+   *         returns (google.api.HttpBody);
+   *       rpc UpdateResource(google.api.HttpBody)
+   *         returns (google.protobuf.Empty);
    *     }
    * Example with streaming methods:
    *     service CaldavService {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/HttpRule.java b/proto-google-common-protos/src/main/java/com/google/api/HttpRule.java
index 2a1dcea7..596483e8 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/HttpRule.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/HttpRule.java
@@ -1140,7 +1140,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, selector_);
     }
     if (patternCase_ == 2) {
@@ -1158,7 +1158,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (patternCase_ == 6) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 6, pattern_);
     }
-    if (!getBodyBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(body_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 7, body_);
     }
     if (patternCase_ == 8) {
@@ -1167,7 +1167,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < additionalBindings_.size(); i++) {
       output.writeMessage(11, additionalBindings_.get(i));
     }
-    if (!getResponseBodyBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(responseBody_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 12, responseBody_);
     }
     unknownFields.writeTo(output);
@@ -1179,7 +1179,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, selector_);
     }
     if (patternCase_ == 2) {
@@ -1197,7 +1197,7 @@ public int getSerializedSize() {
     if (patternCase_ == 6) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, pattern_);
     }
-    if (!getBodyBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(body_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, body_);
     }
     if (patternCase_ == 8) {
@@ -1209,7 +1209,7 @@ public int getSerializedSize() {
       size +=
           com.google.protobuf.CodedOutputStream.computeMessageSize(11, additionalBindings_.get(i));
     }
-    if (!getResponseBodyBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(responseBody_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(12, responseBody_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/JwtLocation.java b/proto-google-common-protos/src/main/java/com/google/api/JwtLocation.java
index 56509060..177d6dd9 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/JwtLocation.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/JwtLocation.java
@@ -390,7 +390,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (inCase_ == 2) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, in_);
     }
-    if (!getValuePrefixBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(valuePrefix_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, valuePrefix_);
     }
     unknownFields.writeTo(output);
@@ -408,7 +408,7 @@ public int getSerializedSize() {
     if (inCase_ == 2) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, in_);
     }
-    if (!getValuePrefixBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(valuePrefix_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, valuePrefix_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/LabelDescriptor.java b/proto-google-common-protos/src/main/java/com/google/api/LabelDescriptor.java
index 3fc6453c..3302ec30 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/LabelDescriptor.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/LabelDescriptor.java
@@ -429,13 +429,13 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getKeyBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(key_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, key_);
     }
     if (valueType_ != com.google.api.LabelDescriptor.ValueType.STRING.getNumber()) {
       output.writeEnum(2, valueType_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, description_);
     }
     unknownFields.writeTo(output);
@@ -447,13 +447,13 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getKeyBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(key_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, key_);
     }
     if (valueType_ != com.google.api.LabelDescriptor.ValueType.STRING.getNumber()) {
       size += com.google.protobuf.CodedOutputStream.computeEnumSize(2, valueType_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, description_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/LogDescriptor.java b/proto-google-common-protos/src/main/java/com/google/api/LogDescriptor.java
index 0e833e44..9e14ec07 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/LogDescriptor.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/LogDescriptor.java
@@ -395,16 +395,16 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     for (int i = 0; i < labels_.size(); i++) {
       output.writeMessage(2, labels_.get(i));
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, description_);
     }
-    if (!getDisplayNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 4, displayName_);
     }
     unknownFields.writeTo(output);
@@ -416,16 +416,16 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     for (int i = 0; i < labels_.size(); i++) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(2, labels_.get(i));
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, description_);
     }
-    if (!getDisplayNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, displayName_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Logging.java b/proto-google-common-protos/src/main/java/com/google/api/Logging.java
index 28057a13..1d812d16 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Logging.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Logging.java
@@ -504,7 +504,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
       for (int i = 0; i < logs_.size(); i++) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, logs_.getRaw(i));
       }
-      if (!getMonitoredResourceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(monitoredResource_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 3, monitoredResource_);
       }
       unknownFields.writeTo(output);
@@ -524,7 +524,7 @@ public int getSerializedSize() {
         size += dataSize;
         size += 1 * getLogsList().size();
       }
-      if (!getMonitoredResourceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(monitoredResource_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, monitoredResource_);
       }
       size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Metric.java b/proto-google-common-protos/src/main/java/com/google/api/Metric.java
index 2956fa3c..f5809ceb 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Metric.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Metric.java
@@ -302,7 +302,7 @@ public final boolean isInitialized() {
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
     com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
         output, internalGetLabels(), LabelsDefaultEntryHolder.defaultEntry, 2);
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, type_);
     }
     unknownFields.writeTo(output);
@@ -324,7 +324,7 @@ public int getSerializedSize() {
               .build();
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(2, labels__);
     }
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, type_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/MetricDescriptor.java b/proto-google-common-protos/src/main/java/com/google/api/MetricDescriptor.java
index 5e522c55..dce25377 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/MetricDescriptor.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/MetricDescriptor.java
@@ -2749,7 +2749,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     for (int i = 0; i < labels_.size(); i++) {
@@ -2763,16 +2763,16 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
         != com.google.api.MetricDescriptor.ValueType.VALUE_TYPE_UNSPECIFIED.getNumber()) {
       output.writeEnum(4, valueType_);
     }
-    if (!getUnitBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(unit_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, unit_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 6, description_);
     }
-    if (!getDisplayNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 7, displayName_);
     }
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 8, type_);
     }
     if (metadata_ != null) {
@@ -2794,7 +2794,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     for (int i = 0; i < labels_.size(); i++) {
@@ -2808,16 +2808,16 @@ public int getSerializedSize() {
         != com.google.api.MetricDescriptor.ValueType.VALUE_TYPE_UNSPECIFIED.getNumber()) {
       size += com.google.protobuf.CodedOutputStream.computeEnumSize(4, valueType_);
     }
-    if (!getUnitBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(unit_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, unit_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, description_);
     }
-    if (!getDisplayNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, displayName_);
     }
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(8, type_);
     }
     if (metadata_ != null) {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/MetricRule.java b/proto-google-common-protos/src/main/java/com/google/api/MetricRule.java
index 62eb9fc8..e0ba2167 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/MetricRule.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/MetricRule.java
@@ -315,7 +315,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, selector_);
     }
     com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
@@ -329,7 +329,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, selector_);
     }
     for (java.util.Map.Entry<java.lang.String, java.lang.Long> entry :
diff --git a/proto-google-common-protos/src/main/java/com/google/api/MonitoredResource.java b/proto-google-common-protos/src/main/java/com/google/api/MonitoredResource.java
index 7bdd0fef..99a05445 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/MonitoredResource.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/MonitoredResource.java
@@ -319,7 +319,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, type_);
     }
     com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
@@ -333,7 +333,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, type_);
     }
     for (java.util.Map.Entry<java.lang.String, java.lang.String> entry :
diff --git a/proto-google-common-protos/src/main/java/com/google/api/MonitoredResourceDescriptor.java b/proto-google-common-protos/src/main/java/com/google/api/MonitoredResourceDescriptor.java
index 5720def1..244b3300 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/MonitoredResourceDescriptor.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/MonitoredResourceDescriptor.java
@@ -509,19 +509,19 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, type_);
     }
-    if (!getDisplayNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, displayName_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, description_);
     }
     for (int i = 0; i < labels_.size(); i++) {
       output.writeMessage(4, labels_.get(i));
     }
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, name_);
     }
     if (launchStage_ != com.google.api.LaunchStage.LAUNCH_STAGE_UNSPECIFIED.getNumber()) {
@@ -536,19 +536,19 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, type_);
     }
-    if (!getDisplayNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, displayName_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, description_);
     }
     for (int i = 0; i < labels_.size(); i++) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, labels_.get(i));
     }
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, name_);
     }
     if (launchStage_ != com.google.api.LaunchStage.LAUNCH_STAGE_UNSPECIFIED.getNumber()) {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Monitoring.java b/proto-google-common-protos/src/main/java/com/google/api/Monitoring.java
index 71c8a496..8bfbec12 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Monitoring.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Monitoring.java
@@ -508,7 +508,7 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getMonitoredResourceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(monitoredResource_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, monitoredResource_);
       }
       for (int i = 0; i < metrics_.size(); i++) {
@@ -523,7 +523,7 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getMonitoredResourceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(monitoredResource_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, monitoredResource_);
       }
       {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/OAuthRequirements.java b/proto-google-common-protos/src/main/java/com/google/api/OAuthRequirements.java
index affe87ea..cbdb4775 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/OAuthRequirements.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/OAuthRequirements.java
@@ -192,7 +192,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getCanonicalScopesBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(canonicalScopes_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, canonicalScopes_);
     }
     unknownFields.writeTo(output);
@@ -204,7 +204,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getCanonicalScopesBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(canonicalScopes_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, canonicalScopes_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Page.java b/proto-google-common-protos/src/main/java/com/google/api/Page.java
index 1385dbba..5bf6d6ba 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Page.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Page.java
@@ -344,10 +344,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
-    if (!getContentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(content_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, content_);
     }
     for (int i = 0; i < subpages_.size(); i++) {
@@ -362,10 +362,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
-    if (!getContentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(content_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, content_);
     }
     for (int i = 0; i < subpages_.size(); i++) {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Property.java b/proto-google-common-protos/src/main/java/com/google/api/Property.java
index fd96260d..ee84f9b8 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Property.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Property.java
@@ -480,13 +480,13 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     if (type_ != com.google.api.Property.PropertyType.UNSPECIFIED.getNumber()) {
       output.writeEnum(2, type_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, description_);
     }
     unknownFields.writeTo(output);
@@ -498,13 +498,13 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     if (type_ != com.google.api.Property.PropertyType.UNSPECIFIED.getNumber()) {
       size += com.google.protobuf.CodedOutputStream.computeEnumSize(2, type_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, description_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/QuotaLimit.java b/proto-google-common-protos/src/main/java/com/google/api/QuotaLimit.java
index 4419a23f..49f17c7f 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/QuotaLimit.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/QuotaLimit.java
@@ -710,7 +710,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, description_);
     }
     if (defaultLimit_ != 0L) {
@@ -719,24 +719,24 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (maxLimit_ != 0L) {
       output.writeInt64(4, maxLimit_);
     }
-    if (!getDurationBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(duration_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, duration_);
     }
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 6, name_);
     }
     if (freeTier_ != 0L) {
       output.writeInt64(7, freeTier_);
     }
-    if (!getMetricBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(metric_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 8, metric_);
     }
-    if (!getUnitBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(unit_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 9, unit_);
     }
     com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
         output, internalGetValues(), ValuesDefaultEntryHolder.defaultEntry, 10);
-    if (!getDisplayNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 12, displayName_);
     }
     unknownFields.writeTo(output);
@@ -748,7 +748,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, description_);
     }
     if (defaultLimit_ != 0L) {
@@ -757,19 +757,19 @@ public int getSerializedSize() {
     if (maxLimit_ != 0L) {
       size += com.google.protobuf.CodedOutputStream.computeInt64Size(4, maxLimit_);
     }
-    if (!getDurationBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(duration_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, duration_);
     }
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, name_);
     }
     if (freeTier_ != 0L) {
       size += com.google.protobuf.CodedOutputStream.computeInt64Size(7, freeTier_);
     }
-    if (!getMetricBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(metric_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(8, metric_);
     }
-    if (!getUnitBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(unit_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(9, unit_);
     }
     for (java.util.Map.Entry<java.lang.String, java.lang.Long> entry :
@@ -782,7 +782,7 @@ public int getSerializedSize() {
               .build();
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(10, values__);
     }
-    if (!getDisplayNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(12, displayName_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/ResourceDescriptor.java b/proto-google-common-protos/src/main/java/com/google/api/ResourceDescriptor.java
index fde6e0ec..6b310ec4 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/ResourceDescriptor.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/ResourceDescriptor.java
@@ -1108,22 +1108,22 @@ public final boolean isInitialized() {
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
     getSerializedSize();
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, type_);
     }
     for (int i = 0; i < pattern_.size(); i++) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, pattern_.getRaw(i));
     }
-    if (!getNameFieldBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nameField_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, nameField_);
     }
     if (history_ != com.google.api.ResourceDescriptor.History.HISTORY_UNSPECIFIED.getNumber()) {
       output.writeEnum(4, history_);
     }
-    if (!getPluralBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(plural_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, plural_);
     }
-    if (!getSingularBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(singular_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 6, singular_);
     }
     if (getStyleList().size() > 0) {
@@ -1142,7 +1142,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, type_);
     }
     {
@@ -1153,16 +1153,16 @@ public int getSerializedSize() {
       size += dataSize;
       size += 1 * getPatternList().size();
     }
-    if (!getNameFieldBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nameField_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, nameField_);
     }
     if (history_ != com.google.api.ResourceDescriptor.History.HISTORY_UNSPECIFIED.getNumber()) {
       size += com.google.protobuf.CodedOutputStream.computeEnumSize(4, history_);
     }
-    if (!getPluralBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(plural_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, plural_);
     }
-    if (!getSingularBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(singular_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, singular_);
     }
     {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/ResourceReference.java b/proto-google-common-protos/src/main/java/com/google/api/ResourceReference.java
index 81caa163..41cd06e4 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/ResourceReference.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/ResourceReference.java
@@ -274,10 +274,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, type_);
     }
-    if (!getChildTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(childType_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, childType_);
     }
     unknownFields.writeTo(output);
@@ -289,10 +289,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, type_);
     }
-    if (!getChildTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(childType_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, childType_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Service.java b/proto-google-common-protos/src/main/java/com/google/api/Service.java
index c81c8194..b188d834 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Service.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Service.java
@@ -1903,10 +1903,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
-    if (!getTitleBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(title_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, title_);
     }
     for (int i = 0; i < apis_.size(); i++) {
@@ -1948,7 +1948,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (control_ != null) {
       output.writeMessage(21, getControl());
     }
-    if (!getProducerProjectIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(producerProjectId_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 22, producerProjectId_);
     }
     for (int i = 0; i < logs_.size(); i++) {
@@ -1972,7 +1972,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (systemParameters_ != null) {
       output.writeMessage(29, getSystemParameters());
     }
-    if (!getIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(id_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 33, id_);
     }
     if (sourceInfo_ != null) {
@@ -1987,10 +1987,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
-    if (!getTitleBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(title_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, title_);
     }
     for (int i = 0; i < apis_.size(); i++) {
@@ -2032,7 +2032,7 @@ public int getSerializedSize() {
     if (control_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(21, getControl());
     }
-    if (!getProducerProjectIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(producerProjectId_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(22, producerProjectId_);
     }
     for (int i = 0; i < logs_.size(); i++) {
@@ -2057,7 +2057,7 @@ public int getSerializedSize() {
     if (systemParameters_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(29, getSystemParameters());
     }
-    if (!getIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(id_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(33, id_);
     }
     if (sourceInfo_ != null) {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/SystemParameter.java b/proto-google-common-protos/src/main/java/com/google/api/SystemParameter.java
index 8b985f51..db2e12f1 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/SystemParameter.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/SystemParameter.java
@@ -293,13 +293,13 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
-    if (!getHttpHeaderBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(httpHeader_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, httpHeader_);
     }
-    if (!getUrlQueryParameterBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(urlQueryParameter_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, urlQueryParameter_);
     }
     unknownFields.writeTo(output);
@@ -311,13 +311,13 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
-    if (!getHttpHeaderBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(httpHeader_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, httpHeader_);
     }
-    if (!getUrlQueryParameterBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(urlQueryParameter_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, urlQueryParameter_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/api/SystemParameterRule.java b/proto-google-common-protos/src/main/java/com/google/api/SystemParameterRule.java
index eab8bf3c..4e75c2e7 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/SystemParameterRule.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/SystemParameterRule.java
@@ -283,7 +283,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, selector_);
     }
     for (int i = 0; i < parameters_.size(); i++) {
@@ -298,7 +298,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, selector_);
     }
     for (int i = 0; i < parameters_.size(); i++) {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/Usage.java b/proto-google-common-protos/src/main/java/com/google/api/Usage.java
index e030784d..487859a4 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/Usage.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/Usage.java
@@ -379,7 +379,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < rules_.size(); i++) {
       output.writeMessage(6, rules_.get(i));
     }
-    if (!getProducerNotificationChannelBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(producerNotificationChannel_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 7, producerNotificationChannel_);
     }
     unknownFields.writeTo(output);
@@ -402,7 +402,7 @@ public int getSerializedSize() {
     for (int i = 0; i < rules_.size(); i++) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(6, rules_.get(i));
     }
-    if (!getProducerNotificationChannelBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(producerNotificationChannel_)) {
       size +=
           com.google.protobuf.GeneratedMessageV3.computeStringSize(7, producerNotificationChannel_);
     }
diff --git a/proto-google-common-protos/src/main/java/com/google/api/UsageRule.java b/proto-google-common-protos/src/main/java/com/google/api/UsageRule.java
index 77ed63dc..c0e63574 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/UsageRule.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/UsageRule.java
@@ -242,7 +242,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, selector_);
     }
     if (allowUnregisteredCalls_ != false) {
@@ -260,7 +260,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, selector_);
     }
     if (allowUnregisteredCalls_ != false) {
diff --git a/proto-google-common-protos/src/main/java/com/google/api/VisibilityRule.java b/proto-google-common-protos/src/main/java/com/google/api/VisibilityRule.java
index fb955b6e..499f8a77 100644
--- a/proto-google-common-protos/src/main/java/com/google/api/VisibilityRule.java
+++ b/proto-google-common-protos/src/main/java/com/google/api/VisibilityRule.java
@@ -252,10 +252,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, selector_);
     }
-    if (!getRestrictionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(restriction_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, restriction_);
     }
     unknownFields.writeTo(output);
@@ -267,10 +267,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getSelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(selector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, selector_);
     }
-    if (!getRestrictionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(restriction_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, restriction_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuditLog.java b/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuditLog.java
index 06421079..b7d14656 100644
--- a/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuditLog.java
+++ b/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuditLog.java
@@ -1050,16 +1050,16 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (requestMetadata_ != null) {
       output.writeMessage(4, getRequestMetadata());
     }
-    if (!getServiceNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceName_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 7, serviceName_);
     }
-    if (!getMethodNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(methodName_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 8, methodName_);
     }
     for (int i = 0; i < authorizationInfo_.size(); i++) {
       output.writeMessage(9, authorizationInfo_.get(i));
     }
-    if (!getResourceNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(resourceName_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 11, resourceName_);
     }
     if (numResponseItems_ != 0L) {
@@ -1101,17 +1101,17 @@ public int getSerializedSize() {
     if (requestMetadata_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getRequestMetadata());
     }
-    if (!getServiceNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceName_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, serviceName_);
     }
-    if (!getMethodNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(methodName_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(8, methodName_);
     }
     for (int i = 0; i < authorizationInfo_.size(); i++) {
       size +=
           com.google.protobuf.CodedOutputStream.computeMessageSize(9, authorizationInfo_.get(i));
     }
-    if (!getResourceNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(resourceName_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(11, resourceName_);
     }
     if (numResponseItems_ != 0L) {
diff --git a/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuthenticationInfo.java b/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuthenticationInfo.java
index 63489c2c..d45e5d89 100644
--- a/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuthenticationInfo.java
+++ b/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuthenticationInfo.java
@@ -559,22 +559,22 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getPrincipalEmailBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principalEmail_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, principalEmail_);
     }
-    if (!getAuthoritySelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(authoritySelector_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, authoritySelector_);
     }
     if (thirdPartyPrincipal_ != null) {
       output.writeMessage(4, getThirdPartyPrincipal());
     }
-    if (!getServiceAccountKeyNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccountKeyName_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, serviceAccountKeyName_);
     }
     for (int i = 0; i < serviceAccountDelegationInfo_.size(); i++) {
       output.writeMessage(6, serviceAccountDelegationInfo_.get(i));
     }
-    if (!getPrincipalSubjectBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principalSubject_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 8, principalSubject_);
     }
     unknownFields.writeTo(output);
@@ -586,16 +586,16 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getPrincipalEmailBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principalEmail_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, principalEmail_);
     }
-    if (!getAuthoritySelectorBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(authoritySelector_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, authoritySelector_);
     }
     if (thirdPartyPrincipal_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getThirdPartyPrincipal());
     }
-    if (!getServiceAccountKeyNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccountKeyName_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, serviceAccountKeyName_);
     }
     for (int i = 0; i < serviceAccountDelegationInfo_.size(); i++) {
@@ -603,7 +603,7 @@ public int getSerializedSize() {
           com.google.protobuf.CodedOutputStream.computeMessageSize(
               6, serviceAccountDelegationInfo_.get(i));
     }
-    if (!getPrincipalSubjectBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principalSubject_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(8, principalSubject_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuthorizationInfo.java b/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuthorizationInfo.java
index bca5b604..30058b2a 100644
--- a/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuthorizationInfo.java
+++ b/proto-google-common-protos/src/main/java/com/google/cloud/audit/AuthorizationInfo.java
@@ -340,10 +340,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getResourceBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(resource_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, resource_);
     }
-    if (!getPermissionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(permission_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, permission_);
     }
     if (granted_ != false) {
@@ -361,10 +361,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getResourceBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(resource_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, resource_);
     }
-    if (!getPermissionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(permission_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, permission_);
     }
     if (granted_ != false) {
diff --git a/proto-google-common-protos/src/main/java/com/google/cloud/audit/RequestMetadata.java b/proto-google-common-protos/src/main/java/com/google/cloud/audit/RequestMetadata.java
index 1140b7a7..a483792d 100644
--- a/proto-google-common-protos/src/main/java/com/google/cloud/audit/RequestMetadata.java
+++ b/proto-google-common-protos/src/main/java/com/google/cloud/audit/RequestMetadata.java
@@ -487,13 +487,13 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getCallerIpBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(callerIp_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, callerIp_);
     }
-    if (!getCallerSuppliedUserAgentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(callerSuppliedUserAgent_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, callerSuppliedUserAgent_);
     }
-    if (!getCallerNetworkBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(callerNetwork_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, callerNetwork_);
     }
     if (requestAttributes_ != null) {
@@ -511,13 +511,13 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getCallerIpBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(callerIp_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, callerIp_);
     }
-    if (!getCallerSuppliedUserAgentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(callerSuppliedUserAgent_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, callerSuppliedUserAgent_);
     }
-    if (!getCallerNetworkBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(callerNetwork_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, callerNetwork_);
     }
     if (requestAttributes_ != null) {
diff --git a/proto-google-common-protos/src/main/java/com/google/cloud/audit/ServiceAccountDelegationInfo.java b/proto-google-common-protos/src/main/java/com/google/cloud/audit/ServiceAccountDelegationInfo.java
index dabd99af..9ac04c59 100644
--- a/proto-google-common-protos/src/main/java/com/google/cloud/audit/ServiceAccountDelegationInfo.java
+++ b/proto-google-common-protos/src/main/java/com/google/cloud/audit/ServiceAccountDelegationInfo.java
@@ -444,7 +444,7 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getPrincipalEmailBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principalEmail_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, principalEmail_);
       }
       if (serviceMetadata_ != null) {
@@ -459,7 +459,7 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getPrincipalEmailBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principalEmail_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, principalEmail_);
       }
       if (serviceMetadata_ != null) {
@@ -2170,7 +2170,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
       output.writeMessage(
           2, (com.google.cloud.audit.ServiceAccountDelegationInfo.ThirdPartyPrincipal) authority_);
     }
-    if (!getPrincipalSubjectBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principalSubject_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, principalSubject_);
     }
     unknownFields.writeTo(output);
@@ -2194,7 +2194,7 @@ public int getSerializedSize() {
               2,
               (com.google.cloud.audit.ServiceAccountDelegationInfo.ThirdPartyPrincipal) authority_);
     }
-    if (!getPrincipalSubjectBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principalSubject_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, principalSubject_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/logging/type/HttpRequest.java b/proto-google-common-protos/src/main/java/com/google/logging/type/HttpRequest.java
index 6f972417..d3bfba6d 100644
--- a/proto-google-common-protos/src/main/java/com/google/logging/type/HttpRequest.java
+++ b/proto-google-common-protos/src/main/java/com/google/logging/type/HttpRequest.java
@@ -770,10 +770,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getRequestMethodBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(requestMethod_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, requestMethod_);
     }
-    if (!getRequestUrlBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(requestUrl_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, requestUrl_);
     }
     if (requestSize_ != 0L) {
@@ -785,13 +785,13 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (responseSize_ != 0L) {
       output.writeInt64(5, responseSize_);
     }
-    if (!getUserAgentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(userAgent_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 6, userAgent_);
     }
-    if (!getRemoteIpBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(remoteIp_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 7, remoteIp_);
     }
-    if (!getRefererBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(referer_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 8, referer_);
     }
     if (cacheHit_ != false) {
@@ -806,13 +806,13 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (cacheFillBytes_ != 0L) {
       output.writeInt64(12, cacheFillBytes_);
     }
-    if (!getServerIpBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serverIp_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 13, serverIp_);
     }
     if (latency_ != null) {
       output.writeMessage(14, getLatency());
     }
-    if (!getProtocolBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(protocol_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 15, protocol_);
     }
     unknownFields.writeTo(output);
@@ -824,10 +824,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getRequestMethodBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(requestMethod_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, requestMethod_);
     }
-    if (!getRequestUrlBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(requestUrl_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, requestUrl_);
     }
     if (requestSize_ != 0L) {
@@ -839,13 +839,13 @@ public int getSerializedSize() {
     if (responseSize_ != 0L) {
       size += com.google.protobuf.CodedOutputStream.computeInt64Size(5, responseSize_);
     }
-    if (!getUserAgentBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(userAgent_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, userAgent_);
     }
-    if (!getRemoteIpBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(remoteIp_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, remoteIp_);
     }
-    if (!getRefererBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(referer_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(8, referer_);
     }
     if (cacheHit_ != false) {
@@ -862,13 +862,13 @@ public int getSerializedSize() {
     if (cacheFillBytes_ != 0L) {
       size += com.google.protobuf.CodedOutputStream.computeInt64Size(12, cacheFillBytes_);
     }
-    if (!getServerIpBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serverIp_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(13, serverIp_);
     }
     if (latency_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(14, getLatency());
     }
-    if (!getProtocolBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(protocol_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(15, protocol_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/longrunning/CancelOperationRequest.java b/proto-google-common-protos/src/main/java/com/google/longrunning/CancelOperationRequest.java
index 4f1f90d5..a693f21e 100644
--- a/proto-google-common-protos/src/main/java/com/google/longrunning/CancelOperationRequest.java
+++ b/proto-google-common-protos/src/main/java/com/google/longrunning/CancelOperationRequest.java
@@ -174,7 +174,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     unknownFields.writeTo(output);
@@ -186,7 +186,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/longrunning/DeleteOperationRequest.java b/proto-google-common-protos/src/main/java/com/google/longrunning/DeleteOperationRequest.java
index 19ba7c1a..7a839881 100644
--- a/proto-google-common-protos/src/main/java/com/google/longrunning/DeleteOperationRequest.java
+++ b/proto-google-common-protos/src/main/java/com/google/longrunning/DeleteOperationRequest.java
@@ -174,7 +174,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     unknownFields.writeTo(output);
@@ -186,7 +186,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/longrunning/GetOperationRequest.java b/proto-google-common-protos/src/main/java/com/google/longrunning/GetOperationRequest.java
index 3ef88b96..37348bbc 100644
--- a/proto-google-common-protos/src/main/java/com/google/longrunning/GetOperationRequest.java
+++ b/proto-google-common-protos/src/main/java/com/google/longrunning/GetOperationRequest.java
@@ -174,7 +174,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     unknownFields.writeTo(output);
@@ -186,7 +186,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/longrunning/ListOperationsRequest.java b/proto-google-common-protos/src/main/java/com/google/longrunning/ListOperationsRequest.java
index 4ee14de0..3bb14c6a 100644
--- a/proto-google-common-protos/src/main/java/com/google/longrunning/ListOperationsRequest.java
+++ b/proto-google-common-protos/src/main/java/com/google/longrunning/ListOperationsRequest.java
@@ -311,16 +311,16 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getFilterBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(filter_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, filter_);
     }
     if (pageSize_ != 0) {
       output.writeInt32(2, pageSize_);
     }
-    if (!getPageTokenBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(pageToken_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, pageToken_);
     }
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 4, name_);
     }
     unknownFields.writeTo(output);
@@ -332,16 +332,16 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getFilterBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(filter_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, filter_);
     }
     if (pageSize_ != 0) {
       size += com.google.protobuf.CodedOutputStream.computeInt32Size(2, pageSize_);
     }
-    if (!getPageTokenBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(pageToken_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, pageToken_);
     }
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, name_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/longrunning/ListOperationsResponse.java b/proto-google-common-protos/src/main/java/com/google/longrunning/ListOperationsResponse.java
index 4d664c23..006acb31 100644
--- a/proto-google-common-protos/src/main/java/com/google/longrunning/ListOperationsResponse.java
+++ b/proto-google-common-protos/src/main/java/com/google/longrunning/ListOperationsResponse.java
@@ -261,7 +261,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < operations_.size(); i++) {
       output.writeMessage(1, operations_.get(i));
     }
-    if (!getNextPageTokenBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nextPageToken_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, nextPageToken_);
     }
     unknownFields.writeTo(output);
@@ -276,7 +276,7 @@ public int getSerializedSize() {
     for (int i = 0; i < operations_.size(); i++) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(1, operations_.get(i));
     }
-    if (!getNextPageTokenBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nextPageToken_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, nextPageToken_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/longrunning/Operation.java b/proto-google-common-protos/src/main/java/com/google/longrunning/Operation.java
index 5deab038..2d8d9d92 100644
--- a/proto-google-common-protos/src/main/java/com/google/longrunning/Operation.java
+++ b/proto-google-common-protos/src/main/java/com/google/longrunning/Operation.java
@@ -470,7 +470,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     if (metadata_ != null) {
@@ -494,7 +494,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     if (metadata_ != null) {
diff --git a/proto-google-common-protos/src/main/java/com/google/longrunning/OperationInfo.java b/proto-google-common-protos/src/main/java/com/google/longrunning/OperationInfo.java
index 606e7a23..4b4b80bb 100644
--- a/proto-google-common-protos/src/main/java/com/google/longrunning/OperationInfo.java
+++ b/proto-google-common-protos/src/main/java/com/google/longrunning/OperationInfo.java
@@ -257,10 +257,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getResponseTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(responseType_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, responseType_);
     }
-    if (!getMetadataTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(metadataType_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, metadataType_);
     }
     unknownFields.writeTo(output);
@@ -272,10 +272,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getResponseTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(responseType_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, responseType_);
     }
-    if (!getMetadataTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(metadataType_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, metadataType_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/longrunning/WaitOperationRequest.java b/proto-google-common-protos/src/main/java/com/google/longrunning/WaitOperationRequest.java
index ea9b7c6f..45f02503 100644
--- a/proto-google-common-protos/src/main/java/com/google/longrunning/WaitOperationRequest.java
+++ b/proto-google-common-protos/src/main/java/com/google/longrunning/WaitOperationRequest.java
@@ -241,7 +241,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
     }
     if (timeout_ != null) {
@@ -256,7 +256,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
     }
     if (timeout_ != null) {
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/BadRequest.java b/proto-google-common-protos/src/main/java/com/google/rpc/BadRequest.java
index 6dbd808b..68e9d0f8 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/BadRequest.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/BadRequest.java
@@ -394,10 +394,10 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getFieldBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(field_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, field_);
       }
-      if (!getDescriptionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 2, description_);
       }
       unknownFields.writeTo(output);
@@ -409,10 +409,10 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getFieldBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(field_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, field_);
       }
-      if (!getDescriptionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, description_);
       }
       size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/DebugInfo.java b/proto-google-common-protos/src/main/java/com/google/rpc/DebugInfo.java
index e89511f2..9f1ae8c1 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/DebugInfo.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/DebugInfo.java
@@ -250,7 +250,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < stackEntries_.size(); i++) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, stackEntries_.getRaw(i));
     }
-    if (!getDetailBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(detail_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, detail_);
     }
     unknownFields.writeTo(output);
@@ -270,7 +270,7 @@ public int getSerializedSize() {
       size += dataSize;
       size += 1 * getStackEntriesList().size();
     }
-    if (!getDetailBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(detail_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, detail_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/ErrorInfo.java b/proto-google-common-protos/src/main/java/com/google/rpc/ErrorInfo.java
index f107bc82..d3d6f6a6 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/ErrorInfo.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/ErrorInfo.java
@@ -412,10 +412,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getReasonBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(reason_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, reason_);
     }
-    if (!getDomainBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(domain_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, domain_);
     }
     com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
@@ -429,10 +429,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getReasonBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(reason_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, reason_);
     }
-    if (!getDomainBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(domain_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, domain_);
     }
     for (java.util.Map.Entry<java.lang.String, java.lang.String> entry :
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/Help.java b/proto-google-common-protos/src/main/java/com/google/rpc/Help.java
index 2f1acfee..c5ad9887 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/Help.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/Help.java
@@ -383,10 +383,10 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getDescriptionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, description_);
       }
-      if (!getUrlBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(url_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 2, url_);
       }
       unknownFields.writeTo(output);
@@ -398,10 +398,10 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getDescriptionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, description_);
       }
-      if (!getUrlBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(url_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, url_);
       }
       size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/LocalizedMessage.java b/proto-google-common-protos/src/main/java/com/google/rpc/LocalizedMessage.java
index ac614cb6..4ef61533 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/LocalizedMessage.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/LocalizedMessage.java
@@ -234,10 +234,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getLocaleBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(locale_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, locale_);
     }
-    if (!getMessageBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(message_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, message_);
     }
     unknownFields.writeTo(output);
@@ -249,10 +249,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getLocaleBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(locale_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, locale_);
     }
-    if (!getMessageBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(message_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, message_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/PreconditionFailure.java b/proto-google-common-protos/src/main/java/com/google/rpc/PreconditionFailure.java
index fde1058a..bf6feeac 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/PreconditionFailure.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/PreconditionFailure.java
@@ -497,13 +497,13 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getTypeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, type_);
       }
-      if (!getSubjectBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(subject_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 2, subject_);
       }
-      if (!getDescriptionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 3, description_);
       }
       unknownFields.writeTo(output);
@@ -515,13 +515,13 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getTypeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, type_);
       }
-      if (!getSubjectBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(subject_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, subject_);
       }
-      if (!getDescriptionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, description_);
       }
       size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/QuotaFailure.java b/proto-google-common-protos/src/main/java/com/google/rpc/QuotaFailure.java
index b40c9f14..cb105990 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/QuotaFailure.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/QuotaFailure.java
@@ -422,10 +422,10 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getSubjectBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(subject_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, subject_);
       }
-      if (!getDescriptionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 2, description_);
       }
       unknownFields.writeTo(output);
@@ -437,10 +437,10 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getSubjectBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(subject_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, subject_);
       }
-      if (!getDescriptionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, description_);
       }
       size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/RequestInfo.java b/proto-google-common-protos/src/main/java/com/google/rpc/RequestInfo.java
index ee63ccfa..6095880d 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/RequestInfo.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/RequestInfo.java
@@ -234,10 +234,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getRequestIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(requestId_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, requestId_);
     }
-    if (!getServingDataBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(servingData_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, servingData_);
     }
     unknownFields.writeTo(output);
@@ -249,10 +249,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getRequestIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(requestId_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, requestId_);
     }
-    if (!getServingDataBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(servingData_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, servingData_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/ResourceInfo.java b/proto-google-common-protos/src/main/java/com/google/rpc/ResourceInfo.java
index 872fcf17..9016943c 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/ResourceInfo.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/ResourceInfo.java
@@ -359,16 +359,16 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getResourceTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(resourceType_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, resourceType_);
     }
-    if (!getResourceNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(resourceName_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, resourceName_);
     }
-    if (!getOwnerBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(owner_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, owner_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 4, description_);
     }
     unknownFields.writeTo(output);
@@ -380,16 +380,16 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getResourceTypeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(resourceType_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, resourceType_);
     }
-    if (!getResourceNameBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(resourceName_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, resourceName_);
     }
-    if (!getOwnerBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(owner_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, owner_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, description_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/Status.java b/proto-google-common-protos/src/main/java/com/google/rpc/Status.java
index dcd56860..09f4b814 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/Status.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/Status.java
@@ -293,7 +293,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (code_ != 0) {
       output.writeInt32(1, code_);
     }
-    if (!getMessageBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(message_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, message_);
     }
     for (int i = 0; i < details_.size(); i++) {
@@ -311,7 +311,7 @@ public int getSerializedSize() {
     if (code_ != 0) {
       size += com.google.protobuf.CodedOutputStream.computeInt32Size(1, code_);
     }
-    if (!getMessageBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(message_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, message_);
     }
     for (int i = 0; i < details_.size(); i++) {
diff --git a/proto-google-common-protos/src/main/java/com/google/rpc/context/AttributeContext.java b/proto-google-common-protos/src/main/java/com/google/rpc/context/AttributeContext.java
index bdec13a7..26ff2d99 100644
--- a/proto-google-common-protos/src/main/java/com/google/rpc/context/AttributeContext.java
+++ b/proto-google-common-protos/src/main/java/com/google/rpc/context/AttributeContext.java
@@ -827,7 +827,7 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getIpBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(ip_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, ip_);
       }
       if (port_ != 0L) {
@@ -835,10 +835,10 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
       }
       com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
           output, internalGetLabels(), LabelsDefaultEntryHolder.defaultEntry, 6);
-      if (!getPrincipalBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principal_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 7, principal_);
       }
-      if (!getRegionCodeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(regionCode_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 8, regionCode_);
       }
       unknownFields.writeTo(output);
@@ -850,7 +850,7 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getIpBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(ip_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, ip_);
       }
       if (port_ != 0L) {
@@ -866,10 +866,10 @@ public int getSerializedSize() {
                 .build();
         size += com.google.protobuf.CodedOutputStream.computeMessageSize(6, labels__);
       }
-      if (!getPrincipalBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principal_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, principal_);
       }
-      if (!getRegionCodeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(regionCode_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(8, regionCode_);
       }
       size += unknownFields.getSerializedSize();
@@ -2284,16 +2284,16 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getServiceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(service_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, service_);
       }
-      if (!getOperationBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(operation_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 2, operation_);
       }
-      if (!getProtocolBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(protocol_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 3, protocol_);
       }
-      if (!getVersionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(version_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 4, version_);
       }
       unknownFields.writeTo(output);
@@ -2305,16 +2305,16 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getServiceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(service_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, service_);
       }
-      if (!getOperationBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(operation_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, operation_);
       }
-      if (!getProtocolBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(protocol_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, protocol_);
       }
-      if (!getVersionBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(version_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, version_);
       }
       size += unknownFields.getSerializedSize();
@@ -3992,13 +3992,13 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getPrincipalBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principal_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, principal_);
       }
       for (int i = 0; i < audiences_.size(); i++) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 2, audiences_.getRaw(i));
       }
-      if (!getPresenterBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(presenter_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 3, presenter_);
       }
       if (claims_ != null) {
@@ -4016,7 +4016,7 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getPrincipalBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(principal_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, principal_);
       }
       {
@@ -4027,7 +4027,7 @@ public int getSerializedSize() {
         size += dataSize;
         size += 1 * getAudiencesList().size();
       }
-      if (!getPresenterBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(presenter_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, presenter_);
       }
       if (claims_ != null) {
@@ -6710,24 +6710,24 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getIdBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(id_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, id_);
       }
-      if (!getMethodBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(method_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 2, method_);
       }
       com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
           output, internalGetHeaders(), HeadersDefaultEntryHolder.defaultEntry, 3);
-      if (!getPathBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(path_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 4, path_);
       }
-      if (!getHostBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(host_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 5, host_);
       }
-      if (!getSchemeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(scheme_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 6, scheme_);
       }
-      if (!getQueryBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(query_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 7, query_);
       }
       if (time_ != null) {
@@ -6736,10 +6736,10 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
       if (size_ != 0L) {
         output.writeInt64(10, size_);
       }
-      if (!getProtocolBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(protocol_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 11, protocol_);
       }
-      if (!getReasonBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(reason_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 12, reason_);
       }
       if (auth_ != null) {
@@ -6754,10 +6754,10 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getIdBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(id_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, id_);
       }
-      if (!getMethodBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(method_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, method_);
       }
       for (java.util.Map.Entry<java.lang.String, java.lang.String> entry :
@@ -6770,16 +6770,16 @@ public int getSerializedSize() {
                 .build();
         size += com.google.protobuf.CodedOutputStream.computeMessageSize(3, headers__);
       }
-      if (!getPathBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(path_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, path_);
       }
-      if (!getHostBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(host_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, host_);
       }
-      if (!getSchemeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(scheme_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, scheme_);
       }
-      if (!getQueryBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(query_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, query_);
       }
       if (time_ != null) {
@@ -6788,10 +6788,10 @@ public int getSerializedSize() {
       if (size_ != 0L) {
         size += com.google.protobuf.CodedOutputStream.computeInt64Size(10, size_);
       }
-      if (!getProtocolBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(protocol_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(11, protocol_);
       }
-      if (!getReasonBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(reason_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(12, reason_);
       }
       if (auth_ != null) {
@@ -12011,23 +12011,23 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getServiceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(service_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, service_);
       }
-      if (!getNameBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 2, name_);
       }
-      if (!getTypeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 3, type_);
       }
       com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
           output, internalGetLabels(), LabelsDefaultEntryHolder.defaultEntry, 4);
-      if (!getUidBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uid_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 5, uid_);
       }
       com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
           output, internalGetAnnotations(), AnnotationsDefaultEntryHolder.defaultEntry, 6);
-      if (!getDisplayNameBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 7, displayName_);
       }
       if (createTime_ != null) {
@@ -12039,10 +12039,10 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
       if (deleteTime_ != null) {
         output.writeMessage(10, getDeleteTime());
       }
-      if (!getEtagBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(etag_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 11, etag_);
       }
-      if (!getLocationBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(location_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 12, location_);
       }
       unknownFields.writeTo(output);
@@ -12054,13 +12054,13 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getServiceBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(service_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, service_);
       }
-      if (!getNameBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, name_);
       }
-      if (!getTypeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(type_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, type_);
       }
       for (java.util.Map.Entry<java.lang.String, java.lang.String> entry :
@@ -12073,7 +12073,7 @@ public int getSerializedSize() {
                 .build();
         size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, labels__);
       }
-      if (!getUidBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uid_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, uid_);
       }
       for (java.util.Map.Entry<java.lang.String, java.lang.String> entry :
@@ -12086,7 +12086,7 @@ public int getSerializedSize() {
                 .build();
         size += com.google.protobuf.CodedOutputStream.computeMessageSize(6, annotations__);
       }
-      if (!getDisplayNameBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, displayName_);
       }
       if (createTime_ != null) {
@@ -12098,10 +12098,10 @@ public int getSerializedSize() {
       if (deleteTime_ != null) {
         size += com.google.protobuf.CodedOutputStream.computeMessageSize(10, getDeleteTime());
       }
-      if (!getEtagBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(etag_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(11, etag_);
       }
-      if (!getLocationBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(location_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(12, location_);
       }
       size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/type/Decimal.java b/proto-google-common-protos/src/main/java/com/google/type/Decimal.java
index fdea8cf1..c7f211ec 100644
--- a/proto-google-common-protos/src/main/java/com/google/type/Decimal.java
+++ b/proto-google-common-protos/src/main/java/com/google/type/Decimal.java
@@ -262,7 +262,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getValueBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(value_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, value_);
     }
     unknownFields.writeTo(output);
@@ -274,7 +274,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getValueBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(value_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, value_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/type/Expr.java b/proto-google-common-protos/src/main/java/com/google/type/Expr.java
index 71a4b09b..8e5cf50f 100644
--- a/proto-google-common-protos/src/main/java/com/google/type/Expr.java
+++ b/proto-google-common-protos/src/main/java/com/google/type/Expr.java
@@ -373,16 +373,16 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getExpressionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(expression_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, expression_);
     }
-    if (!getTitleBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(title_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, title_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, description_);
     }
-    if (!getLocationBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(location_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 4, location_);
     }
     unknownFields.writeTo(output);
@@ -394,16 +394,16 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getExpressionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(expression_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, expression_);
     }
-    if (!getTitleBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(title_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, title_);
     }
-    if (!getDescriptionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, description_);
     }
-    if (!getLocationBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(location_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, location_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/type/LocalizedText.java b/proto-google-common-protos/src/main/java/com/google/type/LocalizedText.java
index 87998f0f..428b83f5 100644
--- a/proto-google-common-protos/src/main/java/com/google/type/LocalizedText.java
+++ b/proto-google-common-protos/src/main/java/com/google/type/LocalizedText.java
@@ -233,10 +233,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getTextBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(text_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, text_);
     }
-    if (!getLanguageCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(languageCode_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, languageCode_);
     }
     unknownFields.writeTo(output);
@@ -248,10 +248,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getTextBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(text_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, text_);
     }
-    if (!getLanguageCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(languageCode_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, languageCode_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/type/Money.java b/proto-google-common-protos/src/main/java/com/google/type/Money.java
index ce7edffb..85d2649f 100644
--- a/proto-google-common-protos/src/main/java/com/google/type/Money.java
+++ b/proto-google-common-protos/src/main/java/com/google/type/Money.java
@@ -223,7 +223,7 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getCurrencyCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(currencyCode_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, currencyCode_);
     }
     if (units_ != 0L) {
@@ -241,7 +241,7 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getCurrencyCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(currencyCode_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, currencyCode_);
     }
     if (units_ != 0L) {
diff --git a/proto-google-common-protos/src/main/java/com/google/type/PhoneNumber.java b/proto-google-common-protos/src/main/java/com/google/type/PhoneNumber.java
index a50d0b48..b4462dba 100644
--- a/proto-google-common-protos/src/main/java/com/google/type/PhoneNumber.java
+++ b/proto-google-common-protos/src/main/java/com/google/type/PhoneNumber.java
@@ -441,10 +441,10 @@ public final boolean isInitialized() {
 
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-      if (!getRegionCodeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(regionCode_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, regionCode_);
       }
-      if (!getNumberBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(number_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 2, number_);
       }
       unknownFields.writeTo(output);
@@ -456,10 +456,10 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (!getRegionCodeBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(regionCode_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, regionCode_);
       }
-      if (!getNumberBytes().isEmpty()) {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(number_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, number_);
       }
       size += unknownFields.getSerializedSize();
@@ -1346,7 +1346,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (kindCase_ == 2) {
       output.writeMessage(2, (com.google.type.PhoneNumber.ShortCode) kind_);
     }
-    if (!getExtensionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(extension_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, extension_);
     }
     unknownFields.writeTo(output);
@@ -1366,7 +1366,7 @@ public int getSerializedSize() {
           com.google.protobuf.CodedOutputStream.computeMessageSize(
               2, (com.google.type.PhoneNumber.ShortCode) kind_);
     }
-    if (!getExtensionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(extension_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, extension_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/type/PostalAddress.java b/proto-google-common-protos/src/main/java/com/google/type/PostalAddress.java
index f139c918..0a0ce4ad 100644
--- a/proto-google-common-protos/src/main/java/com/google/type/PostalAddress.java
+++ b/proto-google-common-protos/src/main/java/com/google/type/PostalAddress.java
@@ -903,25 +903,25 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (revision_ != 0) {
       output.writeInt32(1, revision_);
     }
-    if (!getRegionCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(regionCode_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, regionCode_);
     }
-    if (!getLanguageCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(languageCode_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, languageCode_);
     }
-    if (!getPostalCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(postalCode_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 4, postalCode_);
     }
-    if (!getSortingCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sortingCode_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 5, sortingCode_);
     }
-    if (!getAdministrativeAreaBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(administrativeArea_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 6, administrativeArea_);
     }
-    if (!getLocalityBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(locality_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 7, locality_);
     }
-    if (!getSublocalityBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sublocality_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 8, sublocality_);
     }
     for (int i = 0; i < addressLines_.size(); i++) {
@@ -930,7 +930,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     for (int i = 0; i < recipients_.size(); i++) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 10, recipients_.getRaw(i));
     }
-    if (!getOrganizationBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(organization_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 11, organization_);
     }
     unknownFields.writeTo(output);
@@ -945,25 +945,25 @@ public int getSerializedSize() {
     if (revision_ != 0) {
       size += com.google.protobuf.CodedOutputStream.computeInt32Size(1, revision_);
     }
-    if (!getRegionCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(regionCode_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, regionCode_);
     }
-    if (!getLanguageCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(languageCode_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, languageCode_);
     }
-    if (!getPostalCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(postalCode_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, postalCode_);
     }
-    if (!getSortingCodeBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sortingCode_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, sortingCode_);
     }
-    if (!getAdministrativeAreaBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(administrativeArea_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, administrativeArea_);
     }
-    if (!getLocalityBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(locality_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, locality_);
     }
-    if (!getSublocalityBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sublocality_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(8, sublocality_);
     }
     {
@@ -982,7 +982,7 @@ public int getSerializedSize() {
       size += dataSize;
       size += 1 * getRecipientsList().size();
     }
-    if (!getOrganizationBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(organization_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(11, organization_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/java/com/google/type/TimeZone.java b/proto-google-common-protos/src/main/java/com/google/type/TimeZone.java
index 015da6de..e62bcb6c 100644
--- a/proto-google-common-protos/src/main/java/com/google/type/TimeZone.java
+++ b/proto-google-common-protos/src/main/java/com/google/type/TimeZone.java
@@ -229,10 +229,10 @@ public final boolean isInitialized() {
 
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
-    if (!getIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(id_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 1, id_);
     }
-    if (!getVersionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(version_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 2, version_);
     }
     unknownFields.writeTo(output);
@@ -244,10 +244,10 @@ public int getSerializedSize() {
     if (size != -1) return size;
 
     size = 0;
-    if (!getIdBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(id_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, id_);
     }
-    if (!getVersionBytes().isEmpty()) {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(version_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, version_);
     }
     size += unknownFields.getSerializedSize();
diff --git a/proto-google-common-protos/src/main/proto/google/api/httpbody.proto b/proto-google-common-protos/src/main/proto/google/api/httpbody.proto
index 596ba357..00c80aba 100644
--- a/proto-google-common-protos/src/main/proto/google/api/httpbody.proto
+++ b/proto-google-common-protos/src/main/proto/google/api/httpbody.proto
@@ -45,12 +45,15 @@ option objc_class_prefix = "GAPI";
 //
 //       // The raw HTTP body is bound to this field.
 //       google.api.HttpBody http_body = 2;
+//
 //     }
 //
 //     service ResourceService {
-//       rpc GetResource(GetResourceRequest) returns (google.api.HttpBody);
-//       rpc UpdateResource(google.api.HttpBody) returns
-//       (google.protobuf.Empty);
+//       rpc GetResource(GetResourceRequest)
+//         returns (google.api.HttpBody);
+//       rpc UpdateResource(google.api.HttpBody)
+//         returns (google.protobuf.Empty);
+//
 //     }
 //
 // Example with streaming methods:
@@ -60,6 +63,7 @@ option objc_class_prefix = "GAPI";
 //         returns (stream google.api.HttpBody);
 //       rpc UpdateCalendar(stream google.api.HttpBody)
 //         returns (stream google.api.HttpBody);
+//
 //     }
 //
 // Use of this type only changes how the request and response bodies are
diff --git a/synth.metadata b/synth.metadata
index afdcdb7f..75c8b8c7 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -11,8 +11,8 @@
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "aa15f328736501d01fac1d599655c392b5b12a3c",
-        "internalRef": "394033461"
+        "sha": "177c62af7f181a42b91def98dec2e46efdb07b5e",
+        "internalRef": "401879979"
       }
     },
     {
diff --git a/synth.py b/synth.py
index d90a71f7..358c5bee 100644
--- a/synth.py
+++ b/synth.py
@@ -101,6 +101,7 @@ def build_grpc(target):
 os.remove("proto-google-common-protos/src/main/java/com/google/cloud/audit/BigQueryAuditMetadataProto.java")
 os.remove("proto-google-common-protos/src/main/proto/google/cloud/audit/bigquery_audit_metadata.proto")
 os.remove("proto-google-common-protos/src/main/proto/google/cloud/common_resources.proto")
+os.remove("proto-google-common-protos/src/main/proto/google/api/routing.proto")
 
 java.common_templates(excludes=[
   'README.md',