<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _destroy_server(self, server_name):
 """Destroys the given server, called internally."""

        try:
            del self.servers[server_name]
        except KeyError:
            pass

        if self.auto_close and not self.servers:
            loop.stop()