How to use the slixmpp.xmlstream.register_stanza_plugin function in slixmpp

def plugin_init(self):
        self.xmpp.register_feature('rosterver',
                self._handle_rosterver,
                restart=False,
                order=9000)

        register_stanza_plugin(StreamFeatures, stanza.RosterVer)

def plugin_init(self):
        register_stanza_plugin(Iq, Certs)
        register_stanza_plugin(Iq, AppendCert)
        register_stanza_plugin(Iq, DisableCert)
        register_stanza_plugin(Iq, RevokeCert)

def plugin_init(self):
        self.xmpp['xep_0030'].add_feature(FeatureNegotiation.namespace)

        register_stanza_plugin(FeatureNegotiation, Form)

        register_stanza_plugin(Iq, FeatureNegotiation)
        register_stanza_plugin(Message, FeatureNegotiation)

def plugin_init(self):
        register_stanza_plugin(Message, Request)
        register_stanza_plugin(Message, Received)

        self.xmpp.add_filter('out', self._filter_add_receipt_request)

        self.xmpp.register_handler(
                Callback('Message Receipt',
                    StanzaPath('message/receipt'),
                    self._handle_receipt_received))

        self.xmpp.register_handler(
                Callback('Message Receipt Request',
                    StanzaPath('message/request_receipt'),
                    self._handle_receipt_request))

def plugin_init(self):
        """Start the XEP-0066 plugin."""

        self.url_handlers = {'global': self._default_handler,
                             'jid': {}}

        register_stanza_plugin(Iq, stanza.OOBTransfer)
        register_stanza_plugin(Message, stanza.OOB)
        register_stanza_plugin(Presence, stanza.OOB)

        self.xmpp.register_handler(
                Callback('OOB Transfer',
                         StanzaPath('iq@type=set/oob_transfer'),
                         self._handle_transfer))

def plugin_init(self):
        self._cids = {}

        register_stanza_plugin(Iq, BitsOfBinary)
        register_stanza_plugin(Message, BitsOfBinary)
        register_stanza_plugin(Presence, BitsOfBinary)

        self.xmpp.register_handler(
            Callback('Bits of Binary - Iq',
                StanzaPath('iq/bob'),
                self._handle_bob_iq))

        self.xmpp.register_handler(
            Callback('Bits of Binary - Message',
                StanzaPath('message/bob'),
                self._handle_bob))

        self.xmpp.register_handler(
            Callback('Bits of Binary - Presence',
                StanzaPath('presence/bob'),
                self._handle_bob))

def plugin_init(self):
        register_stanza_plugin(Iq, stanza.MAM)
        register_stanza_plugin(Iq, stanza.Preferences)
        register_stanza_plugin(Message, stanza.Result)
        register_stanza_plugin(Iq, stanza.Fin)
        register_stanza_plugin(stanza.Result, self.xmpp['xep_0297'].stanza.Forwarded)
        register_stanza_plugin(stanza.MAM, self.xmpp['xep_0059'].stanza.Set)
        register_stanza_plugin(stanza.Fin, self.xmpp['xep_0059'].stanza.Set)

except ValueError:
            return self.xml.text


register_stanza_plugin(VCardTemp, Name)
register_stanza_plugin(VCardTemp, Address, iterable=True)
register_stanza_plugin(VCardTemp, Agent, iterable=True)
register_stanza_plugin(VCardTemp, Birthday, iterable=True)
register_stanza_plugin(VCardTemp, Categories, iterable=True)
register_stanza_plugin(VCardTemp, Desc, iterable=True)
register_stanza_plugin(VCardTemp, Email, iterable=True)
register_stanza_plugin(VCardTemp, Geo, iterable=True)
register_stanza_plugin(VCardTemp, JabberID, iterable=True)
register_stanza_plugin(VCardTemp, Label, iterable=True)
register_stanza_plugin(VCardTemp, Logo, iterable=True)
register_stanza_plugin(VCardTemp, Mailer, iterable=True)
register_stanza_plugin(VCardTemp, Note, iterable=True)
register_stanza_plugin(VCardTemp, Nickname, iterable=True)
register_stanza_plugin(VCardTemp, Org, iterable=True)
register_stanza_plugin(VCardTemp, Photo, iterable=True)
register_stanza_plugin(VCardTemp, ProdID, iterable=True)
register_stanza_plugin(VCardTemp, Rev, iterable=True)
register_stanza_plugin(VCardTemp, Role, iterable=True)
register_stanza_plugin(VCardTemp, SortString, iterable=True)
register_stanza_plugin(VCardTemp, Sound, iterable=True)
register_stanza_plugin(VCardTemp, Telephone, iterable=True)
register_stanza_plugin(VCardTemp, Title, iterable=True)
register_stanza_plugin(VCardTemp, TimeZone, iterable=True)
register_stanza_plugin(VCardTemp, UID, iterable=True)
register_stanza_plugin(VCardTemp, URL, iterable=True)

register_stanza_plugin(Photo, BinVal)

value = xep_0082.format_datetime(value)
        self._set_attr('expiry', value)

    def set_jid(self, value):
        self._set_attr('jid', str(value))

    def get_jid(self):
        return JID(self._get_attr('jid'))


register_stanza_plugin(Message, Event)
register_stanza_plugin(Event, EventCollection)
register_stanza_plugin(Event, EventConfiguration)
register_stanza_plugin(Event, EventPurge)
register_stanza_plugin(Event, EventDelete)
register_stanza_plugin(Event, EventItems)
register_stanza_plugin(Event, EventSubscription)
register_stanza_plugin(EventCollection, EventAssociate)
register_stanza_plugin(EventCollection, EventDisassociate)
register_stanza_plugin(EventConfiguration, Form)
register_stanza_plugin(EventItems, EventItem, iterable=True)
register_stanza_plugin(EventItems, EventRetract, iterable=True)