diff --git a/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceClient.java b/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceClient.java
index 52203878..1c358528 100644
--- a/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceClient.java
+++ b/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceClient.java
@@ -16,7 +16,6 @@
 
 package com.google.cloud.bigquery.datatransfer.v1;
 
-import com.google.api.core.ApiFunction;
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.BetaApi;
@@ -1934,12 +1933,7 @@ public static ApiFuture<ListDataSourcesPagedResponse> createAsync(
           ListDataSourcesPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<ListDataSourcesPage, ListDataSourcesPagedResponse>() {
-            @Override
-            public ListDataSourcesPagedResponse apply(ListDataSourcesPage input) {
-              return new ListDataSourcesPagedResponse(input);
-            }
-          },
+          input -> new ListDataSourcesPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
@@ -2017,12 +2011,7 @@ public static ApiFuture<ListTransferConfigsPagedResponse> createAsync(
           ListTransferConfigsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<ListTransferConfigsPage, ListTransferConfigsPagedResponse>() {
-            @Override
-            public ListTransferConfigsPagedResponse apply(ListTransferConfigsPage input) {
-              return new ListTransferConfigsPagedResponse(input);
-            }
-          },
+          input -> new ListTransferConfigsPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
@@ -2105,12 +2094,7 @@ public static ApiFuture<ListTransferRunsPagedResponse> createAsync(
           ListTransferRunsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<ListTransferRunsPage, ListTransferRunsPagedResponse>() {
-            @Override
-            public ListTransferRunsPagedResponse apply(ListTransferRunsPage input) {
-              return new ListTransferRunsPagedResponse(input);
-            }
-          },
+          input -> new ListTransferRunsPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
@@ -2187,12 +2171,7 @@ public static ApiFuture<ListTransferLogsPagedResponse> createAsync(
           ListTransferLogsPage.createEmptyPage().createPageAsync(context, futureResponse);
       return ApiFutures.transform(
           futurePage,
-          new ApiFunction<ListTransferLogsPage, ListTransferLogsPagedResponse>() {
-            @Override
-            public ListTransferLogsPagedResponse apply(ListTransferLogsPage input) {
-              return new ListTransferLogsPagedResponse(input);
-            }
-          },
+          input -> new ListTransferLogsPagedResponse(input),
           MoreExecutors.directExecutor());
     }
 
diff --git a/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceSettings.java b/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceSettings.java
index e5d615e2..eee7afdf 100644
--- a/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceSettings.java
+++ b/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/DataTransferServiceSettings.java
@@ -248,14 +248,13 @@ public DataTransferServiceStubSettings.Builder getStubSettingsBuilder() {
       return ((DataTransferServiceStubSettings.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-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStubSettings.java b/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStubSettings.java
index 0f2e05a3..d7be3564 100644
--- a/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStubSettings.java
+++ b/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/DataTransferServiceStubSettings.java
@@ -810,14 +810,13 @@ 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-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceStub.java b/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceStub.java
index 66d3e3e5..0c8019d7 100644
--- a/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceStub.java
+++ b/google-cloud-bigquerydatatransfer/src/main/java/com/google/cloud/bigquery/datatransfer/v1/stub/GrpcDataTransferServiceStub.java
@@ -26,7 +26,6 @@
 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.bigquery.datatransfer.v1.CheckValidCredsRequest;
 import com.google.cloud.bigquery.datatransfer.v1.CheckValidCredsResponse;
@@ -58,7 +57,6 @@
 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;
 
@@ -313,13 +311,10 @@ protected GrpcDataTransferServiceStub(
         GrpcCallSettings.<GetDataSourceRequest, DataSource>newBuilder()
             .setMethodDescriptor(getDataSourceMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetDataSourceRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetDataSourceRequest 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<ListDataSourcesRequest, ListDataSourcesResponse>
@@ -327,13 +322,10 @@ public Map<String, String> extract(GetDataSourceRequest request) {
             GrpcCallSettings.<ListDataSourcesRequest, ListDataSourcesResponse>newBuilder()
                 .setMethodDescriptor(listDataSourcesMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<ListDataSourcesRequest>() {
-                      @Override
-                      public Map<String, String> extract(ListDataSourcesRequest 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<CreateTransferConfigRequest, TransferConfig>
@@ -341,13 +333,10 @@ public Map<String, String> extract(ListDataSourcesRequest request) {
             GrpcCallSettings.<CreateTransferConfigRequest, TransferConfig>newBuilder()
                 .setMethodDescriptor(createTransferConfigMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<CreateTransferConfigRequest>() {
-                      @Override
-                      public Map<String, String> extract(CreateTransferConfigRequest 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<UpdateTransferConfigRequest, TransferConfig>
@@ -355,41 +344,32 @@ public Map<String, String> extract(CreateTransferConfigRequest request) {
             GrpcCallSettings.<UpdateTransferConfigRequest, TransferConfig>newBuilder()
                 .setMethodDescriptor(updateTransferConfigMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<UpdateTransferConfigRequest>() {
-                      @Override
-                      public Map<String, String> extract(UpdateTransferConfigRequest request) {
-                        ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
-                        params.put(
-                            "transfer_config.name",
-                            String.valueOf(request.getTransferConfig().getName()));
-                        return params.build();
-                      }
+                    request -> {
+                      ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                      params.put(
+                          "transfer_config.name",
+                          String.valueOf(request.getTransferConfig().getName()));
+                      return params.build();
                     })
                 .build();
     GrpcCallSettings<DeleteTransferConfigRequest, Empty> deleteTransferConfigTransportSettings =
         GrpcCallSettings.<DeleteTransferConfigRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteTransferConfigMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteTransferConfigRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteTransferConfigRequest 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<GetTransferConfigRequest, TransferConfig> getTransferConfigTransportSettings =
         GrpcCallSettings.<GetTransferConfigRequest, TransferConfig>newBuilder()
             .setMethodDescriptor(getTransferConfigMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetTransferConfigRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetTransferConfigRequest 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<ListTransferConfigsRequest, ListTransferConfigsResponse>
@@ -397,13 +377,10 @@ public Map<String, String> extract(GetTransferConfigRequest request) {
             GrpcCallSettings.<ListTransferConfigsRequest, ListTransferConfigsResponse>newBuilder()
                 .setMethodDescriptor(listTransferConfigsMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<ListTransferConfigsRequest>() {
-                      @Override
-                      public Map<String, String> extract(ListTransferConfigsRequest 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<ScheduleTransferRunsRequest, ScheduleTransferRunsResponse>
@@ -411,13 +388,10 @@ public Map<String, String> extract(ListTransferConfigsRequest request) {
             GrpcCallSettings.<ScheduleTransferRunsRequest, ScheduleTransferRunsResponse>newBuilder()
                 .setMethodDescriptor(scheduleTransferRunsMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<ScheduleTransferRunsRequest>() {
-                      @Override
-                      public Map<String, String> extract(ScheduleTransferRunsRequest 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<StartManualTransferRunsRequest, StartManualTransferRunsResponse>
@@ -426,39 +400,30 @@ public Map<String, String> extract(ScheduleTransferRunsRequest request) {
                 .<StartManualTransferRunsRequest, StartManualTransferRunsResponse>newBuilder()
                 .setMethodDescriptor(startManualTransferRunsMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<StartManualTransferRunsRequest>() {
-                      @Override
-                      public Map<String, String> extract(StartManualTransferRunsRequest 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<GetTransferRunRequest, TransferRun> getTransferRunTransportSettings =
         GrpcCallSettings.<GetTransferRunRequest, TransferRun>newBuilder()
             .setMethodDescriptor(getTransferRunMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<GetTransferRunRequest>() {
-                  @Override
-                  public Map<String, String> extract(GetTransferRunRequest 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<DeleteTransferRunRequest, Empty> deleteTransferRunTransportSettings =
         GrpcCallSettings.<DeleteTransferRunRequest, Empty>newBuilder()
             .setMethodDescriptor(deleteTransferRunMethodDescriptor)
             .setParamsExtractor(
-                new RequestParamsExtractor<DeleteTransferRunRequest>() {
-                  @Override
-                  public Map<String, String> extract(DeleteTransferRunRequest 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<ListTransferRunsRequest, ListTransferRunsResponse>
@@ -466,13 +431,10 @@ public Map<String, String> extract(DeleteTransferRunRequest request) {
             GrpcCallSettings.<ListTransferRunsRequest, ListTransferRunsResponse>newBuilder()
                 .setMethodDescriptor(listTransferRunsMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<ListTransferRunsRequest>() {
-                      @Override
-                      public Map<String, String> extract(ListTransferRunsRequest 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<ListTransferLogsRequest, ListTransferLogsResponse>
@@ -480,13 +442,10 @@ public Map<String, String> extract(ListTransferRunsRequest request) {
             GrpcCallSettings.<ListTransferLogsRequest, ListTransferLogsResponse>newBuilder()
                 .setMethodDescriptor(listTransferLogsMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<ListTransferLogsRequest>() {
-                      @Override
-                      public Map<String, String> extract(ListTransferLogsRequest 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<CheckValidCredsRequest, CheckValidCredsResponse>
@@ -494,13 +453,10 @@ public Map<String, String> extract(ListTransferLogsRequest request) {
             GrpcCallSettings.<CheckValidCredsRequest, CheckValidCredsResponse>newBuilder()
                 .setMethodDescriptor(checkValidCredsMethodDescriptor)
                 .setParamsExtractor(
-                    new RequestParamsExtractor<CheckValidCredsRequest>() {
-                      @Override
-                      public Map<String, String> extract(CheckValidCredsRequest 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();
 
@@ -686,7 +642,13 @@ public UnaryCallable<CheckValidCredsRequest, CheckValidCredsResponse> checkValid
 
   @Override
   public final void close() {
-    shutdown();
+    try {
+      backgroundResources.close();
+    } catch (RuntimeException e) {
+      throw e;
+    } catch (Exception e) {
+      throw new IllegalStateException("Failed to close resource", e);
+    }
   }
 
   @Override
diff --git a/synth.metadata b/synth.metadata
index cfe76a33..a7a1d58d 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -11,15 +11,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-bigquerydatatransfer.git",
-        "sha": "64b589469ed44c6f73d998391ff3c8a924e9fa7b"
+        "sha": "8317ab0133e2eb4f484e47f04ddbd54b6cc8e44e"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "551681f25e36b11829e87e580281350461f4f3f5",
-        "internalRef": "379784268"
+        "sha": "d9eaf41de44d953458b18712a3f240bb4c564e48",
+        "internalRef": "388535346"
       }
     },
     {