@BetaApi
  public static InstantiatingHttpJsonChannelProvider.Builder
      defaultHttpJsonTransportProviderBuilder() {
    return InstantiatingHttpJsonChannelProvider.newBuilder();
  }
Returns a builder for the default REST ChannelProvider for this service.
java-workspaceevents/google-cloud-workspaceevents/src/main/java/com/google/apps/events/subscriptions/v1/stub/SubscriptionsServiceStubSettings.java