code: @Override
      public java.util.concurrent.Future<ListEventSourceMappingsResult> listEventSourceMappingsAsync(
              com.amazonaws.handlers.AsyncHandler<ListEventSourceMappingsRequest, ListEventSourceMappingsResult> asyncHandler) {
  
          return listEventSourceMappingsAsync(new ListEventSourceMappingsRequest(), asyncHandler);
      }
docs: Simplified method form for invoking the ListEventSourceMappings operation with an AsyncHandler.
  
  @see #listEventSourceMappingsAsync(ListEventSourceMappingsRequest, com.amazonaws.handlers.AsyncHandler)