'Access the sync_lists
:returns: twilio.rest.sync.v1.service.sync_list.SyncListList
:rtype: twilio.rest.sync.v1.service.sync_list.SyncListList'

@property
def sync_lists(self):

    if (self._sync_lists is None):
        self._sync_lists = SyncListList(self._version, service_sid=self._solution['sid'])
    return self._sync_lists
