diff --git a/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisSettings.java b/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisSettings.java
index 5605f7ca..7d190c79 100644
--- a/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisSettings.java
+++ b/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/ContainerAnalysisSettings.java
@@ -183,14 +183,13 @@ public ContainerAnalysisStubSettings.Builder getStubSettingsBuilder() {
       return ((ContainerAnalysisStubSettings.Builder) getStubSettings());
     }
 
-    // NEXT_MAJOR_VER: remove 'throws Exception'.
     /**
      * Applies the given settings updater function to all of the unary API methods in this service.
      *
      * <p>Note: This method does not support applying settings to streaming methods.
      */
     public Builder applyToAllUnaryMethods(
-        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) throws Exception {
+        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) {
       super.applyToAllUnaryMethods(
           getStubSettingsBuilder().unaryMethodSettingsBuilders(), settingsUpdater);
       return this;
diff --git a/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStubSettings.java b/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStubSettings.java
index bbc5b128..7b04cf5d 100644
--- a/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStubSettings.java
+++ b/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/ContainerAnalysisStubSettings.java
@@ -314,14 +314,13 @@ private static Builder initDefaults(Builder builder) {
       return builder;
     }
 
-    // NEXT_MAJOR_VER: remove 'throws Exception'.
     /**
      * Applies the given settings updater function to all of the unary API methods in this service.
      *
      * <p>Note: This method does not support applying settings to streaming methods.
      */
     public Builder applyToAllUnaryMethods(
-        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) throws Exception {
+        ApiFunction<UnaryCallSettings.Builder<?, ?>, Void> settingsUpdater) {
       super.applyToAllUnaryMethods(unaryMethodSettingsBuilders, settingsUpdater);
       return this;
     }
diff --git a/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisStub.java b/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisStub.java
index 9450e7af..7fb476e4 100644
--- a/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisStub.java
+++ b/google-cloud-containeranalysis/src/main/java/com/google/cloud/devtools/containeranalysis/v1/stub/GrpcContainerAnalysisStub.java
@@ -21,7 +21,6 @@
 import com.google.api.gax.grpc.GrpcCallSettings;
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
 import com.google.api.gax.rpc.ClientContext;
-import com.google.api.gax.rpc.RequestParamsExtractor;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.common.collect.ImmutableMap;
 import com.google.containeranalysis.v1.GetVulnerabilityOccurrencesSummaryRequest;
@@ -35,7 +34,6 @@
 import io.grpc.MethodDescriptor;
 import io.grpc.protobuf.ProtoUtils;
 import java.io.IOException;
-import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Generated;
 
@@ -147,26 +145,20 @@ protected GrpcContainerAnalysisStub(
         GrpcCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
             .setMethodDescriptor(setIamPolicyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<SetIamPolicyRequest>() {
-                  @Override
-                  public Map<String, String> extract(SetIamPolicyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("resource", String.valueOf(request.getResource()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("resource", String.valueOf(request.getResource()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
         GrpcCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
             .setMethodDescriptor(getIamPolicyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetIamPolicyRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetIamPolicyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("resource", String.valueOf(request.getResource()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("resource", String.valueOf(request.getResource()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
@@ -174,13 +166,10 @@ public Map<String, String> extract(GetIamPolicyRequest request) {
             GrpcCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
                 .setMethodDescriptor(testIamPermissionsMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<TestIamPermissionsRequest>() {
-                      @Override
-                      public Map<String, String> extract(TestIamPermissionsRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put("resource", String.valueOf(request.getResource()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put("resource", String.valueOf(request.getResource()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<GetVulnerabilityOccurrencesSummaryRequest, VulnerabilityOccurrencesSummary>
@@ -190,14 +179,10 @@ public Map<String, String> extract(TestIamPermissionsRequest request) {
                     newBuilder()
                 .setMethodDescriptor(getVulnerabilityOccurrencesSummaryMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<GetVulnerabilityOccurrencesSummaryRequest>() {
-                      @Override
-                      public Map<String, String> extract(
-                          GetVulnerabilityOccurrencesSummaryRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put("parent", String.valueOf(request.getParent()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put("parent", String.valueOf(request.getParent()));
+                      return params.build();
                     })
                 .build();
 
@@ -250,7 +235,13 @@ public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
 
   @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/synth.metadata b/synth.metadata
index caadbb63..2ecc09ee 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -11,8 +11,8 @@
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "551681f25e36b11829e87e580281350461f4f3f5",
-        "internalRef": "379784268"
+        "sha": "d9eaf41de44d953458b18712a3f240bb4c564e48",
+        "internalRef": "388535346"
       }
     },
     {