code: def refresh(self, ctx: Context_T, *, current_arg: str = '') -> None:
          
          self.ctx = ctx
          self.current_arg = current_arg
          self._current_arg_text = None
          self._current_arg_images = None
docs: Refill the session with a new message context.
  
          :param ctx: new message context
          :param current_arg: new command argument as a string