How to use the nbxmpp.structs.StanzaHandler function in nbxmpp

BaseModule.__init__(self, con)

        self.handlers = [
            StanzaHandler(name='iq',
                          typ='result',
                          ns=Namespace.BYTESTREAM,
                          callback=self._on_bytestream_result),
            StanzaHandler(name='iq',
                          typ='error',
                          ns=Namespace.BYTESTREAM,
                          callback=self._on_bytestream_error),
            StanzaHandler(name='iq',
                          typ='set',
                          ns=Namespace.BYTESTREAM,
                          callback=self._on_bytestream_set),
            StanzaHandler(name='iq',
                          typ='result',
                          callback=self._on_result),
        ]

        self.no_gupnp_reply_id = None
        self.ok_id = None
        self.fail_id = None

def __init__(self, con):
        BaseModule.__init__(self, con)

        self.handlers = [
            StanzaHandler(name='message',
                          callback=self._set_message_archive_info,
                          priority=41),
            StanzaHandler(name='message',
                          callback=self._mam_message_received,
                          priority=51),
        ]

        self.available = False
        self._mam_query_ids = {}

        # Holds archive jids where catch up was successful
        self._catch_up_finished = []

def __init__(self, con):
        BaseModule.__init__(self, con)

        self.handlers = [
            StanzaHandler(name='presence',
                          callback=self._entity_caps,
                          ns=Namespace.CAPS,
                          priority=51),
        ]

        self._identities = [
            DiscoIdentity(category='client', type='pc', name='Gajim')
        ]

        self._queued_tasks_by_hash = defaultdict(set)
        self._queued_tasks_by_jid = {}

def __init__(self, con: ConnectionT) -> None:
        BaseModule.__init__(self, con)

        self.handlers = [
            StanzaHandler(name='iq',
                          callback=self._answer_request,
                          typ='get',
                          ns=Namespace.PING),
        ]

def __init__(self, con):
        BaseModule.__init__(self, con)

        self.handlers = [
            StanzaHandler(name='iq',
                          callback=self._iq_error_received,
                          typ='error',
                          priority=51),
        ]

def __init__(self, con):
        BaseModule.__init__(self, con)

        self.handlers = [
            StanzaHandler(name='iq',
                          typ='result',
                          callback=self._on_jingle_iq),
            StanzaHandler(name='iq',
                          typ='error',
                          callback=self._on_jingle_iq),
            StanzaHandler(name='iq',
                          typ='set',
                          ns=Namespace.JINGLE,
                          callback=self._on_jingle_iq),
            StanzaHandler(name='iq',
                          typ='get',
                          ns=Namespace.PUBKEY_PUBKEY,
                          callback=self._on_pubkey_request),
            StanzaHandler(name='iq',
                          typ='result',
                          ns=Namespace.PUBKEY_PUBKEY,
                          callback=self._pubkey_result_received),
        ]

        # dictionary: sessionid => JingleSession object
        self._sessions = {}

def __init__(self, con):
        BaseModule.__init__(self, con)

        self.blocked = []

        self.handlers = [
            StanzaHandler(name='iq',
                          callback=self._blocking_push_received,
                          typ='set',
                          ns=Namespace.BLOCKING),
        ]

        self._register_callback('get_blocking_list',
                                self._blocking_list_received)

        self.supported = False

def __init__(self, con):
        BaseModule.__init__(self, con)

        self.handlers = [
            StanzaHandler(name='message',
                          callback=self._check_if_unknown_contact,
                          priority=41),
            StanzaHandler(name='message',
                          callback=self._message_received,
                          priority=50),
            StanzaHandler(name='message',
                          typ='error',
                          callback=self._message_error_received,
                          priority=50),
        ]

        # XEPs for which this message module should not be executed
        self._message_namespaces = set([Namespace.ROSTERX,
                                        Namespace.IBB])

def __init__(self, con):
        BaseModule.__init__(self, con)

        self.handlers = [
            StanzaHandler(name='presence',
                          callback=self._presence_received,
                          priority=50),
            StanzaHandler(name='presence',
                          callback=self._subscribe_received,
                          typ='subscribe',
                          priority=49),
            StanzaHandler(name='presence',
                          callback=self._subscribed_received,
                          typ='subscribed',
                          priority=49),
            StanzaHandler(name='presence',
                          callback=self._unsubscribe_received,
                          typ='unsubscribe',
                          priority=49),
            StanzaHandler(name='presence',
                          callback=self._unsubscribed_received,
                          typ='unsubscribed',
                          priority=49),
        ]

        # keep the jids we auto added (transports contacts) to not send the
        # SUBSCRIBED event to GUI
        self.automatically_added = []

callback=self._on_muc_user_presence,
                          ns=Namespace.MUC_USER,
                          priority=49),
            StanzaHandler(name='presence',
                          callback=self._on_error_presence,
                          typ='error',
                          priority=49),
            StanzaHandler(name='message',
                          callback=self._on_subject_change,
                          typ='groupchat',
                          priority=49),
            StanzaHandler(name='message',
                          callback=self._on_config_change,
                          ns=Namespace.MUC_USER,
                          priority=49),
            StanzaHandler(name='message',
                          callback=self._on_invite_or_decline,
                          typ='normal',
                          ns=Namespace.MUC_USER,
                          priority=49),
            StanzaHandler(name='message',
                          callback=self._on_invite_or_decline,
                          ns=Namespace.CONFERENCE,
                          priority=49),
            StanzaHandler(name='message',
                          callback=self._on_captcha_challenge,
                          ns=Namespace.CAPTCHA,
                          priority=49),
            StanzaHandler(name='message',
                          callback=self._on_voice_request,
                          ns=Namespace.DATA,
                          priority=49)