def _get_prop_names(self):
    raise NotImplementedError
Tests that 1 + 1 always equals 2.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/datastore/datastore_query.py/_PropertyComponent._get_prop_names--crossover with--dataset/ETHPy150Open HumanDynamics/openPDS/openpds/accesscontrol/tests.py/SimpleTest.test_basic_addition