'Check fields inherited from CinderBase ORM class.'

def __check_cinderbase_fields(self, columns):

    self.assertIsInstance(columns.created_at.type, self.TIME_TYPE)
    self.assertIsInstance(columns.updated_at.type, self.TIME_TYPE)
    self.assertIsInstance(columns.deleted_at.type, self.TIME_TYPE)
    self.assertIsInstance(columns.deleted.type, self.BOOL_TYPE)
