'Fetch a ChannelInstance
:returns: Fetched ChannelInstance
:rtype: twilio.rest.chat.v2.service.channel.ChannelInstance'

def fetch(self):

    params = values.of({})
    payload = self._version.fetch('GET', self._uri, params=params)
    return ChannelInstance(self._version, payload, service_sid=self._solution['service_sid'], sid=self._solution['sid'])
