def buildProtocol(self, addr):
        proto = portforward.ProxyClientFactory.buildProtocol(self, addr)
        self.protoInstance = proto
        return proto
Handles the 'If-Match' header for modifying data, either allowing
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/test/test_protocols.py/TestableProxyClientFactory.buildProtocol--crossover with--dataset/ETHPy150Open jahlborn/appengine-rest-server/src/main/python/rest/__init__.py/Dispatcher.update_if_match