code: def framers(self, value):
          
  
          # Handle sequence values
          if isinstance(value, collections.Sequence):
              if len(value) != 2:
                  raise ValueError('need exactly 2 values to unpack')
              elif (not isinstance(value[0], framers.Framer) or
                    not isinstance(value[1], framers.Framer)):
                  raise ValueError("framer must be an instance of "
                                   "tendril.Framer")
  
              self._send_framer, self._recv_framer = value
  
          # If we have a single value, assume it's a framer
          else:
              if not isinstance(value, framers.Framer):
                  raise ValueError("framer must be an instance of "
                                   "tendril.Framer")
  
              self._send_framer = value
              self._recv_framer = value
docs: Set the framers in use for the connection.  The framer states
          will be reset next time their respective framer is used.