How to use the slixmpp.Iq function in slixmpp

def testConvertData(self):
        """Test that data is converted to base64"""
        iq = Iq()
        iq['type'] = 'set'
        iq['ibb_data']['seq'] = 0
        iq['ibb_data']['data'] = 'slixmpp'

        self.check(iq, """

def setUp(self):
        register_stanza_plugin(Iq, Data)

def plugin_init(self):
        register_stanza_plugin(Iq, BlockList)
        register_stanza_plugin(Iq, Block)
        register_stanza_plugin(Iq, Unblock)

        self.xmpp.register_handler(
                Callback('Blocked Contact',
                    StanzaPath('iq@type=set/block'),
                    self._handle_blocked))

        self.xmpp.register_handler(
                Callback('Unblocked Contact',
                    StanzaPath('iq@type=set/unblock'),
                    self._handle_unblocked))

def plugin_init(self):
        register_stanza_plugin(Iq, BlockList)
        register_stanza_plugin(Iq, Block)
        register_stanza_plugin(Iq, Unblock)

        self.xmpp.register_handler(
                Callback('Blocked Contact',
                    StanzaPath('iq@type=set/block'),
                    self._handle_blocked))

        self.xmpp.register_handler(
                Callback('Unblocked Contact',
                    StanzaPath('iq@type=set/unblock'),
                    self._handle_unblocked))

def plugin_init(self):
        register_stanza_plugin(Iq, RPCQuery)
        register_stanza_plugin(RPCQuery, MethodCall)
        register_stanza_plugin(RPCQuery, MethodResponse)

        self.xmpp.register_handler(
            Callback('RPC Call', MatchXPath('{%s}iq/{%s}query/{%s}methodCall' % (self.xmpp.default_ns, RPCQuery.namespace, RPCQuery.namespace)),
            self._handle_method_call)
        )
        self.xmpp.register_handler(
            Callback('RPC Call', MatchXPath('{%s}iq/{%s}query/{%s}methodResponse' % (self.xmpp.default_ns, RPCQuery.namespace, RPCQuery.namespace)),
            self._handle_method_response)
        )
        self.xmpp.register_handler(
            Callback('RPC Call', MatchXPath('{%s}iq/{%s}error' % (self.xmpp.default_ns, self.xmpp.default_ns)),
            self._handle_error)
        )
        self.xmpp.add_event_handler('jabber_rpc_method_call', self._on_jabber_rpc_method_call)

def plugin_init(self):
        register_stanza_plugin(Iq, Request)
        register_stanza_plugin(Iq, Slot)
        register_stanza_plugin(Slot, Put)
        register_stanza_plugin(Slot, Get)
        register_stanza_plugin(Put, Header, iterable=True)

        self.xmpp.register_handler(
                Callback('HTTP Upload Request',
                         StanzaPath('iq@type=get/http_upload_request'),
                         self._handle_request))

def plugin_init(self):
        register_stanza_plugin(Message, SecurityLabel)
        register_stanza_plugin(Iq, Catalog)

def _fix_default_info(self, info):
        """
        Disco#info results for a JID are required to include at least
        one identity and feature. As a default, if no other identity is
        provided, Slixmpp will use either the generic component or the
        bot client identity. A the standard disco#info feature will also be
        added if no features are provided.

        Arguments:
            info -- The disco#info quest (not the full Iq stanza) to modify.
        """
        result = info
        if isinstance(info, Iq):
            info = info['disco_info']
        if not info['node']:
            if not info['identities']:
                if self.xmpp.is_component:
                    log.debug("No identity found for this entity. " + \
                              "Using default component identity.")
                    info.add_identity('component', 'generic')
                else:
                    log.debug("No identity found for this entity. " + \
                              "Using default client identity.")
                    info.add_identity('client', 'bot')
            if not info['features']:
                log.debug("No features found for this entity. " + \
                          "Using default disco#info feature.")
                info.add_feature(info.namespace)
        return result

self.xmpp.register_handler(
            Callback(
                'HTTP Request',
                StanzaPath('iq/http-req'),
                self._handle_request
            )
        )
        self.xmpp.register_handler(
            Callback(
                'HTTP Response',
                StanzaPath('iq/http-resp'),
                self._handle_response
            )
        )
        register_stanza_plugin(Iq, HTTPRequest, iterable=True)
        register_stanza_plugin(Iq, HTTPResponse, iterable=True)
        register_stanza_plugin(HTTPRequest, Headers, iterable=True)
        register_stanza_plugin(HTTPRequest, HTTPData, iterable=True)
        register_stanza_plugin(HTTPResponse, Headers, iterable=True)
        register_stanza_plugin(HTTPResponse, HTTPData, iterable=True)
        # TODO: Should we register any api's here? self.api.register()

# The session_start event will be triggered when
        # the bot establishes its connection with the server
        # and the XML streams are ready for use. We want to
        # listen for this event so that we we can initialize
        # our roster.
        self.add_event_handler("session_start", self.start)

        self.register_handler(
          Callback('Some custom iq',
            StanzaPath('iq@type=set/action'),
            self._handle_action))

        self.add_event_handler('custom_action',
                self._handle_action_event)

        register_stanza_plugin(Iq, Action)