code: def create(self, attributes=values.unset, twilio_address=values.unset,
                 date_created=values.unset, date_updated=values.unset,
                 identity=values.unset, user_address=values.unset):
          
          data = values.of({
              'Identity': identity,
              'UserAddress': user_address,
              'Attributes': attributes,
              'TwilioAddress': twilio_address,
              'DateCreated': serialize.iso8601_datetime(date_created),
              'DateUpdated': serialize.iso8601_datetime(date_updated),
          })
  
          payload = self._version.create(
              'POST',
              self._uri,
              data=data,
          )
  
          return ParticipantInstance(self._version, payload, session_sid=self._solution['session_sid'], )
docs: Create a new ParticipantInstance
  
          :param unicode attributes: An optional string metadata field you can use to store any data you wish.
          :param unicode twilio_address: The address of the Twilio phone number that the participant is in contact with.
          :param datetime date_created: The date that this resource was created.
          :param datetime date_updated: The date that this resource was last updated.
          :param unicode identity: A unique string identifier for the session participant as Chat User.
          :param unicode user_address: The address of the participant's device.
  
          :returns: Newly created ParticipantInstance
          :rtype: twilio.rest.messaging.v1.session.participant.ParticipantInstance