code: public void performPersistCursorRequest(String name, long key, Request request) {
          persistentRequests.send(new PersistentRequestsActor.PerformCursorRequest(name, key, request));
      }
docs: Perform cursor persist request. Request is performed only if key is bigger than previous
  request with same name
  
  @param name    name of cursor
  @param key     sorting key
  @param request request for performing