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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def subscribe(self, peer_jid):
 """ Request presence subscription with the given `peer_jid`. This is deliberately not a coroutine; we don’t know whether the peer is online (usually) and they may defer the confirmation very long, if they confirm at all. Use :meth:`on_subscribed` to get notified when a peer accepted a subscription request. """

        self.client.enqueue(
            stanza.Presence(type_=structs.PresenceType.SUBSCRIBE,
                            to=peer_jid)
        )