def addCapability(self, capability):
        assert isCapability(capability), 'got %s' % capability
        self.capabilities.add(capability)
Generate and return a clean copy of the file
dataset/ETHPy150Open ProgVal/Limnoria/src/ircdb.py/IrcChannel.addCapability--crossover with--dataset/ETHPy150Open alixander/PyScribe/pyscribe/pyscribe.py/Runner.gen_clean_copy