@classmethod
def set_repr_mode(cls, mode):
    """
        Set __repr__() mode.

        There are two modes:

            REPR_REAL - show real repr() on all CachingProxy instances
            REPR_FAKE - show the repr() of wrapped object

        By default, REPR_REAL is used so each cached object will
        be easily identifieable as such.
        """
    cls.repr_mode = True
