def issubset(self, other):
        return self.is_subset(other)
L{IProcessProtocol.childConnectionLost} is called each time a file
dataset/ETHPy150Open sympy/sympy/sympy/sets/sets.py/Set.issubset--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/internet/test/test_process.py/ProcessTestsBuilder.test_childConnectionLost