code: public static <S extends HasAttachHandlers> void fire(S source, DisplayChangeData data) {
          if (TYPE != null) {
              JQMCalBoxEvent event = new JQMCalBoxEvent(data);
              source.fireEvent(event);
          }
      }
docs: Fires an {@link JQMCalBoxEvent} on all registered handlers in the handler source.
  
  @param <S> The handler source type
  @param source - the source of the handlers