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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get(self, sid):
 """ Constructs a UserBindingContext :param sid: The unique string that identifies the resource :returns: twilio.rest.chat.v2.service.user.user_binding.UserBindingContext :rtype: twilio.rest.chat.v2.service.user.user_binding.UserBindingContext """

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