'Constructs a CallContext
:param sid: Call Sid that uniquely identifies the Call to fetch
:returns: twilio.rest.api.v2010.account.call.CallContext
:rtype: twilio.rest.api.v2010.account.call.CallContext'

def __call__(self, sid):

    return CallContext(self._version, account_sid=self._solution['account_sid'], sid=sid)
