'Constructs a ChannelContext
:param sid: The sid
:returns: twilio.rest.chat.v2.service.channel.ChannelContext
:rtype: twilio.rest.chat.v2.service.channel.ChannelContext'

def __call__(self, sid):

    return ChannelContext(self._version, service_sid=self._solution['service_sid'], sid=sid)
