code: public R setPreviousListEvents(E listEvents){
          mListEvents = listEvents;
          this.setStreamPosition(((IStreamPosition)mListEvents).getNextStreamPosition().toString());
          return (R)this;
      }
docs: Convenience method. When set the request will be set to the next stream position from the given event and will will aggregate the new results with the provided list.
  @param listEvents A list of events to add to.
  @return A BoxRequestEvent object.