code: def future_get_request(self, name, update=None):
          
          obj = None
          exist = yield self.future_check_request(name, update)
          if exist:
              request_info = self._requests_index[name]
              obj = request_info.get('obj')
              if obj is None:
                  obj = self.request_factory(**request_info)
                  self._requests_index[name]['obj'] = obj
  
          raise tornado.gen.Return(obj)
docs: Get the request object.
  
          Check if we have information for this request, if not connect to server
          and update (if allowed).
  
          Parameters
          ----------
          name : string
              Name of the request.
          update : bool or None, optional
              True allow inspect client to inspect katcp server if the request
              is not known.
  
          Returns
          -------
          Request created by :meth:`request_factory` or None if request not found.
  
          Notes
          -----
          Ensure that self.state.data_synced == True if yielding to future_get_request
          from a state-change callback, or a deadlock will occur.