def updateREADME(self, version):
        oldVersion = self.getVersion()
        _changeVersionInFile(
            oldVersion, version,
            self.directory.child("topfiles").child("README").path)
Calling L{decorate} on a test suite will mutate the original suite.
dataset/ETHPy150Open twisted/twisted/twisted/python/_release.py/Project.updateREADME--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/trial/test/test_tests.py/TestDecoratorMixin.test_decorateInPlaceMutatesOriginal