code: def data_sessions(self):
          
          if self._data_sessions is None:
              self._data_sessions = DataSessionList(self._version, sim_sid=self._solution['sid'], )
          return self._data_sessions
docs: Access the data_sessions
  
          :returns: twilio.rest.wireless.v1.sim.data_session.DataSessionList
          :rtype: twilio.rest.wireless.v1.sim.data_session.DataSessionList