diff --git a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersStub.java b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersStub.java
index f4afd24c..181fc789 100644
--- a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersStub.java
+++ b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcFoldersStub.java
@@ -530,7 +530,13 @@ public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   @Override
   public final void close() {
-    shutdown();
+    try {
+      backgroundResources.close();
+    } catch (RuntimeException e) {
+      throw e;
+    } catch (Exception e) {
+      throw new IllegalStateException("Failed to close resource", e);
+    }
   }
 
   @Override
diff --git a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsStub.java b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsStub.java
index 0b24cfe5..32616543 100644
--- a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsStub.java
+++ b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcOrganizationsStub.java
@@ -279,7 +279,13 @@ public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   @Override
   public final void close() {
-    shutdown();
+    try {
+      backgroundResources.close();
+    } catch (RuntimeException e) {
+      throw e;
+    } catch (Exception e) {
+      throw new IllegalStateException("Failed to close resource", e);
+    }
   }
 
   @Override
diff --git a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsStub.java b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsStub.java
index ea727ba9..9eee56d0 100644
--- a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsStub.java
+++ b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcProjectsStub.java
@@ -534,7 +534,13 @@ public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   @Override
   public final void close() {
-    shutdown();
+    try {
+      backgroundResources.close();
+    } catch (RuntimeException e) {
+      throw e;
+    } catch (Exception e) {
+      throw new IllegalStateException("Failed to close resource", e);
+    }
   }
 
   @Override
diff --git a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsStub.java b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsStub.java
index b77ed0ca..f634c934 100644
--- a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsStub.java
+++ b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagBindingsStub.java
@@ -227,7 +227,13 @@ public UnaryCallable<DeleteTagBindingRequest, Operation> deleteTagBindingCallabl
 
   @Override
   public final void close() {
-    shutdown();
+    try {
+      backgroundResources.close();
+    } catch (RuntimeException e) {
+      throw e;
+    } catch (Exception e) {
+      throw new IllegalStateException("Failed to close resource", e);
+    }
   }
 
   @Override
diff --git a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysStub.java b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysStub.java
index 9cb861f3..12d10a3e 100644
--- a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysStub.java
+++ b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagKeysStub.java
@@ -398,7 +398,13 @@ public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   @Override
   public final void close() {
-    shutdown();
+    try {
+      backgroundResources.close();
+    } catch (RuntimeException e) {
+      throw e;
+    } catch (Exception e) {
+      throw new IllegalStateException("Failed to close resource", e);
+    }
   }
 
   @Override
diff --git a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesStub.java b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesStub.java
index 77e8962d..9e1267b4 100644
--- a/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesStub.java
+++ b/google-cloud-resourcemanager/src/main/java/com/google/cloud/resourcemanager/v3/stub/GrpcTagValuesStub.java
@@ -405,7 +405,13 @@ public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
 
   @Override
   public final void close() {
-    shutdown();
+    try {
+      backgroundResources.close();
+    } catch (RuntimeException e) {
+      throw e;
+    } catch (Exception e) {
+      throw new IllegalStateException("Failed to close resource", e);
+    }
   }
 
   @Override