code: def webhooks(self):
          
          if self._webhooks is None:
              self._webhooks = WebhookList(self._version, session_sid=self._solution['sid'], )
          return self._webhooks
docs: Access the webhooks
  
          :returns: twilio.rest.messaging.v1.session.webhook.WebhookList
          :rtype: twilio.rest.messaging.v1.session.webhook.WebhookList