'Generate an instance context for the instance, the context is capable of
performing various actions.  All instance actions are proxied to the context
:returns: UserBindingContext for this UserBindingInstance
:rtype: twilio.rest.notify.v1.service.user.user_binding.UserBindingContext'

@property
def _proxy(self):

    if (self._context is None):
        self._context = UserBindingContext(self._version, service_sid=self._solution['service_sid'], identity=self._solution['identity'], sid=self._solution['sid'])
    return self._context
