How to use the slixmpp.Message function in slixmpp

def setUp(self):
        register_stanza_plugin(Message, xep_0085.stanza.Active)
        register_stanza_plugin(Message, xep_0085.stanza.Composing)
        register_stanza_plugin(Message, xep_0085.stanza.Gone)
        register_stanza_plugin(Message, xep_0085.stanza.Inactive)
        register_stanza_plugin(Message, xep_0085.stanza.Paused)

def setUp(self):
        register_stanza_plugin(Message, xep_0033.Addresses)

def plugin_init(self):
        register_stanza_plugin(Message, Addresses)
        register_stanza_plugin(Presence, Addresses)

def plugin_init(self):
        register_stanza_plugin(Message, Headers)
        register_stanza_plugin(Presence, Headers)

def plugin_init(self):
        self.xmpp.register_handler(
                Callback('Direct MUC Invitations',
                         StanzaPath('message/groupchat_invite'),
                         self._handle_invite))

        register_stanza_plugin(Message, Invite)

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, OAuth)

def plugin_init(self):
        self._streams = {}
        self._preauthed_sids = {}

        register_stanza_plugin(Iq, Open)
        register_stanza_plugin(Iq, Close)
        register_stanza_plugin(Iq, Data)
        register_stanza_plugin(Message, Data)

        self.xmpp.register_handler(Callback(
            'IBB Open',
            StanzaPath('iq@type=set/ibb_open'),
            self._handle_open_request))

        self.xmpp.register_handler(Callback(
            'IBB Close',
            StanzaPath('iq@type=set/ibb_close'),
            self._handle_close))

        self.xmpp.register_handler(Callback(
            'IBB Data',
            StanzaPath('iq@type=set/ibb_data'),
            self._handle_data))

def plugin_init(self):
        register_stanza_plugin(Message, JSON_Container)

name = 'cancelled'
    plugin_attrib = name
    interfaces = {'seqnr'}


register_stanza_plugin(Iq, Request)
register_stanza_plugin(Request, RequestNode, iterable=True)
register_stanza_plugin(Request, RequestField, iterable=True)

register_stanza_plugin(Iq, Accepted)
register_stanza_plugin(Message, Failure)
register_stanza_plugin(Failure, Error)

register_stanza_plugin(Iq, Rejected)

register_stanza_plugin(Message, Fields)
register_stanza_plugin(Fields, FieldsNode, iterable=True)
register_stanza_plugin(FieldsNode, Timestamp, iterable=True)
register_stanza_plugin(Timestamp, Field, iterable=True)
register_stanza_plugin(Timestamp, DataNumeric, iterable=True)
register_stanza_plugin(Timestamp, DataString, iterable=True)
register_stanza_plugin(Timestamp, DataBoolean, iterable=True)
register_stanza_plugin(Timestamp, DataDateTime, iterable=True)
register_stanza_plugin(Timestamp, DataTimeSpan, iterable=True)
register_stanza_plugin(Timestamp, DataEnum, iterable=True)

register_stanza_plugin(Message, Started)

register_stanza_plugin(Iq, Cancel)
register_stanza_plugin(Iq, Cancelled)