code: public static RequestOptions.RequestOptionsBuilder builder(
              @Nullable String publishableApiKey,
              @NonNull @RequestType String requestType) {
          return new RequestOptions.RequestOptionsBuilder(
                  publishableApiKey,
                  requestType);
      }
docs: Static accessor for the {@link RequestOptionsBuilder} class with type.
  
  @param publishableApiKey your publishable API key
  @param requestType your {@link RequestType}
  @return a {@link RequestOptionsBuilder} instance