code: def message_interactions(self):
          
          if self._message_interactions is None:
              self._message_interactions = MessageInteractionList(
                  self._version,
                  service_sid=self._solution['service_sid'],
                  session_sid=self._solution['session_sid'],
                  participant_sid=self._solution['sid'],
              )
          return self._message_interactions
docs: Access the message_interactions
  
          :returns: twilio.rest.proxy.v1.service.session.participant.message_interaction.MessageInteractionList
          :rtype: twilio.rest.proxy.v1.service.session.participant.message_interaction.MessageInteractionList