def participants(self):
        """
        Access the participants

        :returns: twilio.rest.messaging.v1.session.participant.ParticipantList
        :rtype: twilio.rest.messaging.v1.session.participant.ParticipantList
        """
        if self._participants is None:
            self._participants = ParticipantList(self._version, session_sid=self._solution['sid'], )
        return self._participants