def check_query(self, dispatcher, query_expr, query_params):
        return query_expr
Test we can follow an m2m relation after a relation like ForeignKey
dataset/ETHPy150Open jahlborn/appengine-rest-server/src/main/python/rest/__init__.py/Authorizer.check_query--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/tests/modeltests/prefetch_related/tests.py/PrefetchRelatedTests.test_foreign_key_then_m2m