code: def _set_serial_console(self):
          
  
          # activate the first serial port
          yield from self._modify_vm("--uart1 0x3F8 4")
  
          # set server mode with a pipe on the first serial port
          pipe_name = self._get_pipe_name()
          args = [self._vmname, "--uartmode1", "server", pipe_name]
          yield from self.manager.execute("modifyvm", args)
docs: Configures the first serial port to allow a serial console connection.