'Initialize the UserContext
:param Version version: Version that contains the resource
:param service_sid: The service_sid
:param sid: The sid
:returns: twilio.rest.chat.v1.service.user.UserContext
:rtype: twilio.rest.chat.v1.service.user.UserContext'

def __init__(self, version, service_sid, sid):

    super(UserContext, self).__init__(version)
    self._solution = {'service_sid': service_sid, 'sid': sid}
    self._uri = '/Services/{service_sid}/Users/{sid}'.format(**self._solution)
    self._user_channels = None
