ReplaceDefaultNameMixin

#! /usr/bin/env python

class ReplaceDefaultNameMixin(object):
    def __getattribute__(self, name):
        if name in self._meta_data['override_classes']:
            return self._meta_data['override_classes'][name](self)
        elif name in self.__dict__:
            return self.__dict__[name]
        else:
            return self.__getattr__(name)
            
....

and you must add

    self._meta_data['override_classes'] = {FOO.__name__: FOO}
    
to the class that's receiving the mixin...