human
Here's a good function header given the following:
I wrote the below code

    class RealTests(mixinClass, AsyncTestCase, ):
        '\n                                Tests    that    endpoints    are    available    over    the    network    interfaces    that\n                                real    API    users    will    be    connecting    from.\n                                '
        def setUp(self):
            self.app = fixture(self)
            self.port = reactor.listenTCP(0, Site(self.app.resource()), interface='127.0.0.1')
            self.addCleanup(self.port.stopListening)
            portno = self.port.getHost().port
            self.agent = ProxyAgent(TCP4ClientEndpoint(reactor, '127.0.0.1', portno), reactor)
            super(RealTests, self).setUp()
    class MemoryTests(mixinClass, AsyncTestCase, ):
        '\n                                Tests    that    endpoints    are    available    in    the    appropriate    place,    without\n                                testing    that    the    correct    network    interfaces    are    listened    on.\n                                '
        def setUp(self):
            self.app = fixture(self)
            self.agent = MemoryAgent(self.app.resource())
            super(MemoryTests, self).setUp()
    RealTests.__name__ += name
    MemoryTests.__name__ += name
    RealTests.__module__ = mixinClass.__module__
    MemoryTests.__module__ = mixinClass.__module__
    return (RealTests, MemoryTests)

What's a good function header?
assistant
#Here's a good function header.

def buildIntegrationTests(mixinClass, name, fixture):