@BetaApi
  public static InstantiatingHttpJsonChannelProvider.Builder
      defaultHttpJsonTransportProviderBuilder() {
    return CloudTasksStubSettings.defaultHttpJsonTransportProviderBuilder();
  }
Returns a builder for the default REST ChannelProvider for this service.
java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta2/CloudTasksSettings.java