def getDataModelInstance(self, localId, dataPath):
        raise NotImplementedError()
Test self.getById() retrieves child object.
dataset/ETHPy150Open ga4gh/server/tests/datadriven/__init__.py/DataDrivenTest.getDataModelInstance--crossover with--dataset/ETHPy150Open tony/tmuxp/tmuxp/testsuite/tmuxobject.py/TmuxObjectTest.test_getById