code: public ItemResponse withEventsItemResponse(java.util.Map<String, EventItemResponse> eventsItemResponse) {
          setEventsItemResponse(eventsItemResponse);
          return this;
      }
docs: A multipart response object that contains a key and value for each event ID in the request. In each object, the
  event ID is the key, and an EventItemResponse object is the value.
  
  @param eventsItemResponse
  A multipart response object that contains a key and value for each event ID in the request. In each
  object, the event ID is the key, and an EventItemResponse object is the value.
  @return Returns a reference to this object so that method calls can be chained together.