Stores a reference to the unproxied and proxied versions of C{obj} for
        later retrieval.

        @since: 0.6

def addProxyObject(self, obj, proxied):
        """
        Stores a reference to the unproxied and proxied versions of C{obj} for
        later retrieval.

        @since: 0.6
        """
        self.proxied_objects[id(obj)] = proxied
        self.proxied_objects[id(proxied)] = obj