code: public static <V extends HasShowMessage, R, H extends HttpMessages> RestCallbackSimpleImpl<V, //
        R, H> build(final V pview, final Session psession,
            final AsyncCallbackOnSuccess<R> pcallbackOnSuccess) {
      return new RestCallbackSimpleImpl<>(pview, psession, pcallbackOnSuccess);
    }
docs: create rest callback implementation.
  
  @param pview view of the
  @param psession session
  @param pcallbackOnSuccess on success callback
  @param <P> presenter type
  @param <V> view or widget which implements EditorWithErrorHandling interface
  @param <R> rest result type
  @return RestCallbackImpl