code: public static void fire(final HasSummernoteImageUploadHandlers source, JsArray<ImageFile> images) {
          if (TYPE != null) {
              SummernoteImageUploadEvent event = new SummernoteImageUploadEvent(images);
              source.fireEvent(event);
          }
      }
docs: Fires a summernote image upload event on all registered handlers in the
  handler manager. If no such handlers exist, this method will do nothing.
  
  @param source the source of the handlers