[Twisted-Python] Naming test methods constructed with deferredGenerator - is it possible?

[Marcin Kasperski]

> I think this may be fixed in twisted 2.2.

My Debian claims that I am using 2.2.0, so maybe it was patched 
later.

I guess that the fix would be adding within deferredGenerator 
construct like the one suggested by Mike (setting __doc__ of 
returned lambda function to __name__ of wrapped function)