diff --git a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceClient.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceClient.java
index 2826e9ed..23d4726d 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceClient.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.talent.v4;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -701,12 +700,7 @@ public static ApiFuture<ListCompaniesPagedResponse> createAsync(
           ListCompaniesPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<ListCompaniesPage, ListCompaniesPagedResponse>() {
-            @Override
-            public ListCompaniesPagedResponse apply(ListCompaniesPage input) {
-              return new ListCompaniesPagedResponse(input);
-            }
-          },
+          input -> new ListCompaniesPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
diff --git a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceSettings.java
index a89c12ef..1b01ca9e 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompanyServiceSettings.java
@@ -181,14 +181,13 @@ public CompanyServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((CompanyServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4/CompletionSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionSettings.java
index 3c02aaf2..74bfa499 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/CompletionSettings.java
@@ -154,14 +154,13 @@ public CompletionStubSettings.Builder getStubSettingsBuilder() {
       return ((CompletionStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4/EventServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceSettings.java
index 608ef5da..6bd2952a 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/EventServiceSettings.java
@@ -155,14 +155,13 @@ public EventServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((EventServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4/JobServiceClient.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceClient.java
index 752be867..abe1c0f2 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceClient.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.talent.v4;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -1337,14 +1336,7 @@ public static ApiFuture<ListJobsPagedResponse> createAsync(
       ApiFuture<ListJobsPage> futurePage =
           ListJobsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
-          futurePage,
-          new ApiFunction<ListJobsPage, ListJobsPagedResponse>() {
-            @Override
-            public ListJobsPagedResponse apply(ListJobsPage input) {
-              return new ListJobsPagedResponse(input);
-            }
-          },
-          MoreExecutors.directExecutor());
+          futurePage, input -> new ListJobsPagedResponse(input), MoreExecutors.directExecutor());
     }
 
     private ListJobsPagedResponse(ListJobsPage page) {
diff --git a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceSettings.java
index bff69826..fb191227 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/JobServiceSettings.java
@@ -227,14 +227,13 @@ public JobServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((JobServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceClient.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceClient.java
index 24e65750..ff1455ba 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceClient.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.talent.v4;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -692,14 +691,7 @@ public static ApiFuture<ListTenantsPagedResponse> createAsync(
       ApiFuture<ListTenantsPage> futurePage =
           ListTenantsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
-          futurePage,
-          new ApiFunction<ListTenantsPage, ListTenantsPagedResponse>() {
-            @Override
-            public ListTenantsPagedResponse apply(ListTenantsPage input) {
-              return new ListTenantsPagedResponse(input);
-            }
-          },
-          MoreExecutors.directExecutor());
+          futurePage, input -> new ListTenantsPagedResponse(input), MoreExecutors.directExecutor());
     }
 
     private ListTenantsPagedResponse(ListTenantsPage page) {
diff --git a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceSettings.java
index 1a941bd9..92ef4656 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/TenantServiceSettings.java
@@ -180,14 +180,13 @@ public TenantServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((TenantServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStubSettings.java
index cde6b6e4..58db25ac 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompanyServiceStubSettings.java
@@ -402,14 +402,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStubSettings.java
index c76477d6..faaaf5e2 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/CompletionStubSettings.java
@@ -250,14 +250,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStubSettings.java
index 67d8832e..5c497dac 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/EventServiceStubSettings.java
@@ -244,14 +244,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceStub.java
index bbe56c6a..35711e04 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompanyServiceStub.java
@@ -23,7 +23,6 @@
 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.cloud.talent.v4.Company;
 import com.google.cloud.talent.v4.CreateCompanyRequest;
@@ -38,7 +37,6 @@
 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;
 
@@ -153,65 +151,50 @@ protected GrpcCompanyServiceStub(
         GrpcCallSettings.<CreateCompanyRequest, Company>newBuilder()
             .setMethodDescriptor(createCompanyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateCompanyRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateCompanyRequest 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();
     GrpcCallSettings<GetCompanyRequest, Company> getCompanyTransportSettings =
         GrpcCallSettings.<GetCompanyRequest, Company>newBuilder()
             .setMethodDescriptor(getCompanyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetCompanyRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetCompanyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateCompanyRequest, Company> updateCompanyTransportSettings =
         GrpcCallSettings.<UpdateCompanyRequest, Company>newBuilder()
             .setMethodDescriptor(updateCompanyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateCompanyRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateCompanyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("company.name", String.valueOf(request.getCompany().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("company.name", String.valueOf(request.getCompany().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteCompanyRequest, Empty> deleteCompanyTransportSettings =
         GrpcCallSettings.<DeleteCompanyRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteCompanyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteCompanyRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteCompanyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<ListCompaniesRequest, ListCompaniesResponse> listCompaniesTransportSettings =
         GrpcCallSettings.<ListCompaniesRequest, ListCompaniesResponse>newBuilder()
             .setMethodDescriptor(listCompaniesMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListCompaniesRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListCompaniesRequest 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();
 
@@ -275,7 +258,13 @@ public UnaryCallable<ListCompaniesRequest, ListCompaniesResponse> listCompaniesC
 
   @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-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionStub.java
index 34a3ac89..336e6b33 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcCompletionStub.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.cloud.talent.v4.CompleteQueryRequest;
 import com.google.cloud.talent.v4.CompleteQueryResponse;
@@ -30,7 +29,6 @@
 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;
 
@@ -101,13 +99,10 @@ protected GrpcCompletionStub(
         GrpcCallSettings.<CompleteQueryRequest, CompleteQueryResponse>newBuilder()
             .setMethodDescriptor(completeQueryMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CompleteQueryRequest>() {
-                  @Override
-                  public Map<String, String> extract(CompleteQueryRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("tenant", String.valueOf(request.getTenant()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("tenant", String.valueOf(request.getTenant()));
+                  return params.build();
                 })
             .build();
 
@@ -130,7 +125,13 @@ public UnaryCallable<CompleteQueryRequest, CompleteQueryResponse> completeQueryC
 
   @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-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceStub.java
index 2f873751..9adf46b3 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcEventServiceStub.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.cloud.talent.v4.ClientEvent;
 import com.google.cloud.talent.v4.CreateClientEventRequest;
@@ -30,7 +29,6 @@
 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;
 
@@ -100,13 +98,10 @@ protected GrpcEventServiceStub(
         GrpcCallSettings.<CreateClientEventRequest, ClientEvent>newBuilder()
             .setMethodDescriptor(createClientEventMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateClientEventRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateClientEventRequest 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();
 
@@ -131,7 +126,13 @@ public UnaryCallable<CreateClientEventRequest, ClientEvent> createClientEventCal
 
   @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-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceStub.java
index 7b6af386..a4d7908d 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcJobServiceStub.java
@@ -24,7 +24,6 @@
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.OperationCallable;
-import com.google.api.gax.rpc.RequestParamsExtractor;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.talent.v4.BatchCreateJobsRequest;
 import com.google.cloud.talent.v4.BatchCreateJobsResponse;
@@ -49,7 +48,6 @@
 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;
 
@@ -217,130 +215,100 @@ protected GrpcJobServiceStub(
         GrpcCallSettings.<CreateJobRequest, Job>newBuilder()
             .setMethodDescriptor(createJobMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateJobRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateJobRequest 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();
     GrpcCallSettings<BatchCreateJobsRequest, Operation> batchCreateJobsTransportSettings =
         GrpcCallSettings.<BatchCreateJobsRequest, Operation>newBuilder()
             .setMethodDescriptor(batchCreateJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<BatchCreateJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(BatchCreateJobsRequest 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();
     GrpcCallSettings<GetJobRequest, Job> getJobTransportSettings =
         GrpcCallSettings.<GetJobRequest, Job>newBuilder()
             .setMethodDescriptor(getJobMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetJobRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetJobRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateJobRequest, Job> updateJobTransportSettings =
         GrpcCallSettings.<UpdateJobRequest, Job>newBuilder()
             .setMethodDescriptor(updateJobMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateJobRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateJobRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("job.name", String.valueOf(request.getJob().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("job.name", String.valueOf(request.getJob().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<BatchUpdateJobsRequest, Operation> batchUpdateJobsTransportSettings =
         GrpcCallSettings.<BatchUpdateJobsRequest, Operation>newBuilder()
             .setMethodDescriptor(batchUpdateJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<BatchUpdateJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(BatchUpdateJobsRequest 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();
     GrpcCallSettings<DeleteJobRequest, Empty> deleteJobTransportSettings =
         GrpcCallSettings.<DeleteJobRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteJobMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteJobRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteJobRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<BatchDeleteJobsRequest, Operation> batchDeleteJobsTransportSettings =
         GrpcCallSettings.<BatchDeleteJobsRequest, Operation>newBuilder()
             .setMethodDescriptor(batchDeleteJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<BatchDeleteJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(BatchDeleteJobsRequest 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();
     GrpcCallSettings<ListJobsRequest, ListJobsResponse> listJobsTransportSettings =
         GrpcCallSettings.<ListJobsRequest, ListJobsResponse>newBuilder()
             .setMethodDescriptor(listJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListJobsRequest 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();
     GrpcCallSettings<SearchJobsRequest, SearchJobsResponse> searchJobsTransportSettings =
         GrpcCallSettings.<SearchJobsRequest, SearchJobsResponse>newBuilder()
             .setMethodDescriptor(searchJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<SearchJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(SearchJobsRequest 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();
     GrpcCallSettings<SearchJobsRequest, SearchJobsResponse> searchJobsForAlertTransportSettings =
         GrpcCallSettings.<SearchJobsRequest, SearchJobsResponse>newBuilder()
             .setMethodDescriptor(searchJobsForAlertMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<SearchJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(SearchJobsRequest 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();
 
@@ -481,7 +449,13 @@ public UnaryCallable<SearchJobsRequest, SearchJobsResponse> searchJobsForAlertCa
 
   @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-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceStub.java
index fd8e8420..2152e622 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/GrpcTenantServiceStub.java
@@ -23,7 +23,6 @@
 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.cloud.talent.v4.CreateTenantRequest;
 import com.google.cloud.talent.v4.DeleteTenantRequest;
@@ -38,7 +37,6 @@
 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;
 
@@ -146,65 +144,50 @@ protected GrpcTenantServiceStub(
         GrpcCallSettings.<CreateTenantRequest, Tenant>newBuilder()
             .setMethodDescriptor(createTenantMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateTenantRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateTenantRequest 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();
     GrpcCallSettings<GetTenantRequest, Tenant> getTenantTransportSettings =
         GrpcCallSettings.<GetTenantRequest, Tenant>newBuilder()
             .setMethodDescriptor(getTenantMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetTenantRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetTenantRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateTenantRequest, Tenant> updateTenantTransportSettings =
         GrpcCallSettings.<UpdateTenantRequest, Tenant>newBuilder()
             .setMethodDescriptor(updateTenantMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateTenantRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateTenantRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("tenant.name", String.valueOf(request.getTenant().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("tenant.name", String.valueOf(request.getTenant().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteTenantRequest, Empty> deleteTenantTransportSettings =
         GrpcCallSettings.<DeleteTenantRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteTenantMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteTenantRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteTenantRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<ListTenantsRequest, ListTenantsResponse> listTenantsTransportSettings =
         GrpcCallSettings.<ListTenantsRequest, ListTenantsResponse>newBuilder()
             .setMethodDescriptor(listTenantsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListTenantsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListTenantsRequest 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();
 
@@ -267,7 +250,13 @@ public UnaryCallable<ListTenantsRequest, ListTenantsPagedResponse> listTenantsPa
 
   @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-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStubSettings.java
index 37b18339..d4c3767f 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/JobServiceStubSettings.java
@@ -623,14 +623,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStubSettings.java
index 2d87d58b..77f352f1 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4/stub/TenantServiceStubSettings.java
@@ -401,14 +401,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4beta1/ApplicationServiceClient.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ApplicationServiceClient.java
index 5fcaddb3..e58d0ef4 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ApplicationServiceClient.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ApplicationServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.talent.v4beta1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -721,12 +720,7 @@ public static ApiFuture<ListApplicationsPagedResponse> createAsync(
           ListApplicationsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<ListApplicationsPage, ListApplicationsPagedResponse>() {
-            @Override
-            public ListApplicationsPagedResponse apply(ListApplicationsPage input) {
-              return new ListApplicationsPagedResponse(input);
-            }
-          },
+          input -> new ListApplicationsPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
diff --git a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ApplicationServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ApplicationServiceSettings.java
index d6c0fcf9..767e4522 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ApplicationServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ApplicationServiceSettings.java
@@ -184,14 +184,13 @@ public ApplicationServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((ApplicationServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceClient.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceClient.java
index d5f4f250..3cba04c9 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceClient.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.talent.v4beta1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -791,12 +790,7 @@ public static ApiFuture<ListCompaniesPagedResponse> createAsync(
           ListCompaniesPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<ListCompaniesPage, ListCompaniesPagedResponse>() {
-            @Override
-            public ListCompaniesPagedResponse apply(ListCompaniesPage input) {
-              return new ListCompaniesPagedResponse(input);
-            }
-          },
+          input -> new ListCompaniesPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
diff --git a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceSettings.java
index 468f8edd..eb90ec34 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompanyServiceSettings.java
@@ -182,14 +182,13 @@ public CompanyServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((CompanyServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionSettings.java
index 30858e5c..f459f18e 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/CompletionSettings.java
@@ -155,14 +155,13 @@ public CompletionStubSettings.Builder getStubSettingsBuilder() {
       return ((CompletionStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceSettings.java
index 80d37d81..f62e2116 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/EventServiceSettings.java
@@ -156,14 +156,13 @@ public EventServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((EventServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceClient.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceClient.java
index a78af51f..4c9feaa5 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceClient.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.talent.v4beta1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -1633,14 +1632,7 @@ public static ApiFuture<ListJobsPagedResponse> createAsync(
       ApiFuture<ListJobsPage> futurePage =
           ListJobsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
-          futurePage,
-          new ApiFunction<ListJobsPage, ListJobsPagedResponse>() {
-            @Override
-            public ListJobsPagedResponse apply(ListJobsPage input) {
-              return new ListJobsPagedResponse(input);
-            }
-          },
-          MoreExecutors.directExecutor());
+          futurePage, input -> new ListJobsPagedResponse(input), MoreExecutors.directExecutor());
     }
 
     private ListJobsPagedResponse(ListJobsPage page) {
@@ -1707,14 +1699,7 @@ public static ApiFuture<SearchJobsPagedResponse> createAsync(
       ApiFuture<SearchJobsPage> futurePage =
           SearchJobsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
-          futurePage,
-          new ApiFunction<SearchJobsPage, SearchJobsPagedResponse>() {
-            @Override
-            public SearchJobsPagedResponse apply(SearchJobsPage input) {
-              return new SearchJobsPagedResponse(input);
-            }
-          },
-          MoreExecutors.directExecutor());
+          futurePage, input -> new SearchJobsPagedResponse(input), MoreExecutors.directExecutor());
     }
 
     private SearchJobsPagedResponse(SearchJobsPage page) {
@@ -1789,12 +1774,7 @@ public static ApiFuture<SearchJobsForAlertPagedResponse> createAsync(
           SearchJobsForAlertPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<SearchJobsForAlertPage, SearchJobsForAlertPagedResponse>() {
-            @Override
-            public SearchJobsForAlertPagedResponse apply(SearchJobsForAlertPage input) {
-              return new SearchJobsForAlertPagedResponse(input);
-            }
-          },
+          input -> new SearchJobsForAlertPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
diff --git a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceSettings.java
index 7d452dae..aaeb1f92 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/JobServiceSettings.java
@@ -223,14 +223,13 @@ public JobServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((JobServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4beta1/ProfileServiceClient.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ProfileServiceClient.java
index 6ab63656..ea7290b8 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ProfileServiceClient.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ProfileServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.talent.v4beta1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -837,12 +836,7 @@ public static ApiFuture<ListProfilesPagedResponse> createAsync(
           ListProfilesPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<ListProfilesPage, ListProfilesPagedResponse>() {
-            @Override
-            public ListProfilesPagedResponse apply(ListProfilesPage input) {
-              return new ListProfilesPagedResponse(input);
-            }
-          },
+          input -> new ListProfilesPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
@@ -917,12 +911,7 @@ public static ApiFuture<SearchProfilesPagedResponse> createAsync(
           SearchProfilesPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<SearchProfilesPage, SearchProfilesPagedResponse>() {
-            @Override
-            public SearchProfilesPagedResponse apply(SearchProfilesPage input) {
-              return new SearchProfilesPagedResponse(input);
-            }
-          },
+          input -> new SearchProfilesPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
diff --git a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ProfileServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ProfileServiceSettings.java
index 75275cb9..663dfcf7 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ProfileServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/ProfileServiceSettings.java
@@ -190,14 +190,13 @@ public ProfileServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((ProfileServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceClient.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceClient.java
index 0f4f9eab..098f2a17 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceClient.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.talent.v4beta1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -684,14 +683,7 @@ public static ApiFuture<ListTenantsPagedResponse> createAsync(
       ApiFuture<ListTenantsPage> futurePage =
           ListTenantsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
-          futurePage,
-          new ApiFunction<ListTenantsPage, ListTenantsPagedResponse>() {
-            @Override
-            public ListTenantsPagedResponse apply(ListTenantsPage input) {
-              return new ListTenantsPagedResponse(input);
-            }
-          },
-          MoreExecutors.directExecutor());
+          futurePage, input -> new ListTenantsPagedResponse(input), MoreExecutors.directExecutor());
     }
 
     private ListTenantsPagedResponse(ListTenantsPage page) {
diff --git a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceSettings.java
index c36e0151..84d4b752 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/TenantServiceSettings.java
@@ -181,14 +181,13 @@ public TenantServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((TenantServiceStubSettings.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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/ApplicationServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/ApplicationServiceStubSettings.java
index ca1de53e..f78211c1 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/ApplicationServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/ApplicationServiceStubSettings.java
@@ -416,14 +416,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStubSettings.java
index f126646b..eaadec78 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompanyServiceStubSettings.java
@@ -403,14 +403,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStubSettings.java
index 7e69b5dd..b828a828 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/CompletionStubSettings.java
@@ -251,14 +251,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStubSettings.java
index 0c0e59aa..5916a6a5 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/EventServiceStubSettings.java
@@ -245,14 +245,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcApplicationServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcApplicationServiceStub.java
index d3a916b6..d16632f8 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcApplicationServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcApplicationServiceStub.java
@@ -24,7 +24,6 @@
 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.cloud.talent.v4beta1.Application;
 import com.google.cloud.talent.v4beta1.CreateApplicationRequest;
@@ -39,7 +38,6 @@
 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;
 
@@ -160,53 +158,41 @@ protected GrpcApplicationServiceStub(
         GrpcCallSettings.<CreateApplicationRequest, Application>newBuilder()
             .setMethodDescriptor(createApplicationMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateApplicationRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateApplicationRequest 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();
     GrpcCallSettings<GetApplicationRequest, Application> getApplicationTransportSettings =
         GrpcCallSettings.<GetApplicationRequest, Application>newBuilder()
             .setMethodDescriptor(getApplicationMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetApplicationRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetApplicationRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateApplicationRequest, Application> updateApplicationTransportSettings =
         GrpcCallSettings.<UpdateApplicationRequest, Application>newBuilder()
             .setMethodDescriptor(updateApplicationMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateApplicationRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateApplicationRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put(
-                        "application.name", String.valueOf(request.getApplication().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put(
+                      "application.name", String.valueOf(request.getApplication().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteApplicationRequest, Empty> deleteApplicationTransportSettings =
         GrpcCallSettings.<DeleteApplicationRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteApplicationMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteApplicationRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteApplicationRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<ListApplicationsRequest, ListApplicationsResponse>
@@ -214,13 +200,10 @@ public Map<String, String> extract(DeleteApplicationRequest request) {
             GrpcCallSettings.<ListApplicationsRequest, ListApplicationsResponse>newBuilder()
                 .setMethodDescriptor(listApplicationsMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<ListApplicationsRequest>() {
-                      @Override
-                      public Map<String, String> extract(ListApplicationsRequest 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();
 
@@ -291,7 +274,13 @@ public UnaryCallable<DeleteApplicationRequest, Empty> deleteApplicationCallable(
 
   @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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceStub.java
index a2e9e74c..8c4317a6 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompanyServiceStub.java
@@ -24,7 +24,6 @@
 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.cloud.talent.v4beta1.Company;
 import com.google.cloud.talent.v4beta1.CreateCompanyRequest;
@@ -39,7 +38,6 @@
 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;
 
@@ -155,65 +153,50 @@ protected GrpcCompanyServiceStub(
         GrpcCallSettings.<CreateCompanyRequest, Company>newBuilder()
             .setMethodDescriptor(createCompanyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateCompanyRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateCompanyRequest 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();
     GrpcCallSettings<GetCompanyRequest, Company> getCompanyTransportSettings =
         GrpcCallSettings.<GetCompanyRequest, Company>newBuilder()
             .setMethodDescriptor(getCompanyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetCompanyRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetCompanyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateCompanyRequest, Company> updateCompanyTransportSettings =
         GrpcCallSettings.<UpdateCompanyRequest, Company>newBuilder()
             .setMethodDescriptor(updateCompanyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateCompanyRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateCompanyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("company.name", String.valueOf(request.getCompany().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("company.name", String.valueOf(request.getCompany().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteCompanyRequest, Empty> deleteCompanyTransportSettings =
         GrpcCallSettings.<DeleteCompanyRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteCompanyMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteCompanyRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteCompanyRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<ListCompaniesRequest, ListCompaniesResponse> listCompaniesTransportSettings =
         GrpcCallSettings.<ListCompaniesRequest, ListCompaniesResponse>newBuilder()
             .setMethodDescriptor(listCompaniesMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListCompaniesRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListCompaniesRequest 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();
 
@@ -277,7 +260,13 @@ public UnaryCallable<ListCompaniesRequest, ListCompaniesResponse> listCompaniesC
 
   @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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionStub.java
index d7ecdf1c..7c717a22 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcCompletionStub.java
@@ -22,7 +22,6 @@
 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.cloud.talent.v4beta1.CompleteQueryRequest;
 import com.google.cloud.talent.v4beta1.CompleteQueryResponse;
@@ -31,7 +30,6 @@
 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;
 
@@ -103,13 +101,10 @@ protected GrpcCompletionStub(
         GrpcCallSettings.<CompleteQueryRequest, CompleteQueryResponse>newBuilder()
             .setMethodDescriptor(completeQueryMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CompleteQueryRequest>() {
-                  @Override
-                  public Map<String, String> extract(CompleteQueryRequest 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();
 
@@ -132,7 +127,13 @@ public UnaryCallable<CompleteQueryRequest, CompleteQueryResponse> completeQueryC
 
   @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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceStub.java
index ed90f3b3..d702436d 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcEventServiceStub.java
@@ -22,7 +22,6 @@
 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.cloud.talent.v4beta1.ClientEvent;
 import com.google.cloud.talent.v4beta1.CreateClientEventRequest;
@@ -31,7 +30,6 @@
 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;
 
@@ -102,13 +100,10 @@ protected GrpcEventServiceStub(
         GrpcCallSettings.<CreateClientEventRequest, ClientEvent>newBuilder()
             .setMethodDescriptor(createClientEventMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateClientEventRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateClientEventRequest 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();
 
@@ -133,7 +128,13 @@ public UnaryCallable<CreateClientEventRequest, ClientEvent> createClientEventCal
 
   @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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceStub.java
index 8537cee7..282d2640 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcJobServiceStub.java
@@ -27,7 +27,6 @@
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.OperationCallable;
-import com.google.api.gax.rpc.RequestParamsExtractor;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.talent.v4beta1.BatchCreateJobsRequest;
 import com.google.cloud.talent.v4beta1.BatchDeleteJobsRequest;
@@ -50,7 +49,6 @@
 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;
 
@@ -219,130 +217,100 @@ protected GrpcJobServiceStub(
         GrpcCallSettings.<CreateJobRequest, Job>newBuilder()
             .setMethodDescriptor(createJobMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateJobRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateJobRequest 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();
     GrpcCallSettings<BatchCreateJobsRequest, Operation> batchCreateJobsTransportSettings =
         GrpcCallSettings.<BatchCreateJobsRequest, Operation>newBuilder()
             .setMethodDescriptor(batchCreateJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<BatchCreateJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(BatchCreateJobsRequest 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();
     GrpcCallSettings<GetJobRequest, Job> getJobTransportSettings =
         GrpcCallSettings.<GetJobRequest, Job>newBuilder()
             .setMethodDescriptor(getJobMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetJobRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetJobRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateJobRequest, Job> updateJobTransportSettings =
         GrpcCallSettings.<UpdateJobRequest, Job>newBuilder()
             .setMethodDescriptor(updateJobMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateJobRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateJobRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("job.name", String.valueOf(request.getJob().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("job.name", String.valueOf(request.getJob().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<BatchUpdateJobsRequest, Operation> batchUpdateJobsTransportSettings =
         GrpcCallSettings.<BatchUpdateJobsRequest, Operation>newBuilder()
             .setMethodDescriptor(batchUpdateJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<BatchUpdateJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(BatchUpdateJobsRequest 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();
     GrpcCallSettings<DeleteJobRequest, Empty> deleteJobTransportSettings =
         GrpcCallSettings.<DeleteJobRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteJobMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteJobRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteJobRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<BatchDeleteJobsRequest, Empty> batchDeleteJobsTransportSettings =
         GrpcCallSettings.<BatchDeleteJobsRequest, Empty>newBuilder()
             .setMethodDescriptor(batchDeleteJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<BatchDeleteJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(BatchDeleteJobsRequest 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();
     GrpcCallSettings<ListJobsRequest, ListJobsResponse> listJobsTransportSettings =
         GrpcCallSettings.<ListJobsRequest, ListJobsResponse>newBuilder()
             .setMethodDescriptor(listJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListJobsRequest 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();
     GrpcCallSettings<SearchJobsRequest, SearchJobsResponse> searchJobsTransportSettings =
         GrpcCallSettings.<SearchJobsRequest, SearchJobsResponse>newBuilder()
             .setMethodDescriptor(searchJobsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<SearchJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(SearchJobsRequest 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();
     GrpcCallSettings<SearchJobsRequest, SearchJobsResponse> searchJobsForAlertTransportSettings =
         GrpcCallSettings.<SearchJobsRequest, SearchJobsResponse>newBuilder()
             .setMethodDescriptor(searchJobsForAlertMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<SearchJobsRequest>() {
-                  @Override
-                  public Map<String, String> extract(SearchJobsRequest 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();
 
@@ -490,7 +458,13 @@ public UnaryCallable<SearchJobsRequest, SearchJobsResponse> searchJobsForAlertCa
 
   @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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcProfileServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcProfileServiceStub.java
index 99dfd8e8..98c49de6 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcProfileServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcProfileServiceStub.java
@@ -25,7 +25,6 @@
 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.cloud.talent.v4beta1.CreateProfileRequest;
 import com.google.cloud.talent.v4beta1.DeleteProfileRequest;
@@ -42,7 +41,6 @@
 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;
 
@@ -171,65 +169,50 @@ protected GrpcProfileServiceStub(
         GrpcCallSettings.<ListProfilesRequest, ListProfilesResponse>newBuilder()
             .setMethodDescriptor(listProfilesMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListProfilesRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListProfilesRequest 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();
     GrpcCallSettings<CreateProfileRequest, Profile> createProfileTransportSettings =
         GrpcCallSettings.<CreateProfileRequest, Profile>newBuilder()
             .setMethodDescriptor(createProfileMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateProfileRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateProfileRequest 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();
     GrpcCallSettings<GetProfileRequest, Profile> getProfileTransportSettings =
         GrpcCallSettings.<GetProfileRequest, Profile>newBuilder()
             .setMethodDescriptor(getProfileMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetProfileRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetProfileRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateProfileRequest, Profile> updateProfileTransportSettings =
         GrpcCallSettings.<UpdateProfileRequest, Profile>newBuilder()
             .setMethodDescriptor(updateProfileMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateProfileRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateProfileRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("profile.name", String.valueOf(request.getProfile().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("profile.name", String.valueOf(request.getProfile().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteProfileRequest, Empty> deleteProfileTransportSettings =
         GrpcCallSettings.<DeleteProfileRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteProfileMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteProfileRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteProfileRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<SearchProfilesRequest, SearchProfilesResponse>
@@ -237,13 +220,10 @@ public Map<String, String> extract(DeleteProfileRequest request) {
             GrpcCallSettings.<SearchProfilesRequest, SearchProfilesResponse>newBuilder()
                 .setMethodDescriptor(searchProfilesMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<SearchProfilesRequest>() {
-                      @Override
-                      public Map<String, String> extract(SearchProfilesRequest 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();
 
@@ -323,7 +303,13 @@ public UnaryCallable<SearchProfilesRequest, SearchProfilesResponse> searchProfil
 
   @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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceStub.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceStub.java
index d195a3e3..7c4aacb3 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceStub.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/GrpcTenantServiceStub.java
@@ -24,7 +24,6 @@
 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.cloud.talent.v4beta1.CreateTenantRequest;
 import com.google.cloud.talent.v4beta1.DeleteTenantRequest;
@@ -39,7 +38,6 @@
 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;
 
@@ -148,65 +146,50 @@ protected GrpcTenantServiceStub(
         GrpcCallSettings.<CreateTenantRequest, Tenant>newBuilder()
             .setMethodDescriptor(createTenantMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<CreateTenantRequest>() {
-                  @Override
-                  public Map<String, String> extract(CreateTenantRequest 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();
     GrpcCallSettings<GetTenantRequest, Tenant> getTenantTransportSettings =
         GrpcCallSettings.<GetTenantRequest, Tenant>newBuilder()
             .setMethodDescriptor(getTenantMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetTenantRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetTenantRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<UpdateTenantRequest, Tenant> updateTenantTransportSettings =
         GrpcCallSettings.<UpdateTenantRequest, Tenant>newBuilder()
             .setMethodDescriptor(updateTenantMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<UpdateTenantRequest>() {
-                  @Override
-                  public Map<String, String> extract(UpdateTenantRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("tenant.name", String.valueOf(request.getTenant().getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("tenant.name", String.valueOf(request.getTenant().getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<DeleteTenantRequest, Empty> deleteTenantTransportSettings =
         GrpcCallSettings.<DeleteTenantRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteTenantMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteTenantRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteTenantRequest request) {
-                    ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                    params.put("name", String.valueOf(request.getName()));
-                    return params.build();
-                  }
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
                 })
             .build();
     GrpcCallSettings<ListTenantsRequest, ListTenantsResponse> listTenantsTransportSettings =
         GrpcCallSettings.<ListTenantsRequest, ListTenantsResponse>newBuilder()
             .setMethodDescriptor(listTenantsMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<ListTenantsRequest>() {
-                  @Override
-                  public Map<String, String> extract(ListTenantsRequest 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();
 
@@ -269,7 +252,13 @@ public UnaryCallable<ListTenantsRequest, ListTenantsPagedResponse> listTenantsPa
 
   @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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStubSettings.java
index 79292d50..e80ad705 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/JobServiceStubSettings.java
@@ -704,14 +704,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/ProfileServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/ProfileServiceStubSettings.java
index a2be19c1..f6c61315 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/ProfileServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/ProfileServiceStubSettings.java
@@ -487,14 +487,13 @@ 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-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStubSettings.java b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStubSettings.java
index b32871fc..20a0b08e 100644
--- a/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStubSettings.java
+++ b/google-cloud-talent/src/main/java/com/google/cloud/talent/v4beta1/stub/TenantServiceStubSettings.java
@@ -402,14 +402,13 @@ 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/synth.metadata b/synth.metadata
index a0f18722..d711a09d 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -4,23 +4,23 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-talent.git",
-        "sha": "331d13a4af070fc0a3f3f9219c214b0485ed6a51"
+        "sha": "7931edb4617690db6a226501c0e89b0047cb5909"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "551681f25e36b11829e87e580281350461f4f3f5",
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