def _lookupChainInClass(self, pyClass, pyAst, chainWithPosition):
        memberFunctions = self._classMemberFunctions(pyClass)

        for _, func in memberFunctions:
            # lookup should be indpendent of which function we
            # actually choose. However, the unbound chain may not
            # appear in every member function
            try:
                return self._lookupChainInFunction(func, chainWithPosition)
            except UnresolvedFreeVariableException:
                pass

        baseClassResolutionOrNone = self._resolveChainByBaseClasses(
            pyClass, pyAst, chainWithPosition
            )
        if baseClassResolutionOrNone is not None:
            return baseClassResolutionOrNone

        raise UnresolvedFreeVariableException(chainWithPosition, None)
Deprecate C{iterate}, C{crash} and C{stop} on C{reactor}. That is,
dataset/ETHPy150Open ufora/ufora/packages/python/pyfora/PyObjectWalker.py/PyObjectWalker._lookupChainInClass--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/trial/unittest.py/TestCase._deprecateReactor