public static ApiClientHeaderProvider.Builder defaultApiClientHeaderProviderBuilder() {
    return StorageBatchOperationsStubSettings.defaultGrpcApiClientHeaderProviderBuilder();
  }
Returns a builder for the default REST ChannelProvider for this service.
java-storagebatchoperations/google-cloud-storagebatchoperations/src/main/java/com/google/cloud/storagebatchoperations/v1/stub/StorageBatchOperationsStubSettings.java