def copy(self):
        return self.__class__(self.properties.copy(), type=self.type)
test that the ORDER BY is propagated from the inner
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/webob-1.1.1/webob/cachecontrol.py/CacheControl.copy--crossover with--dataset/ETHPy150Open zzzeek/sqlalchemy/test/orm/test_eager_relations.py/EagerTest.test_limit_3