Prevents __init__ from being called if returning a obj copy.

def _dummy_init(self, *args, **kwargs): #@UnusedVariable
    """Prevents __init__ from being called if returning a obj copy."""
    cls = type(self)
    old_init = cls._intern__old_init
    if old_init is _NotDefined:
        del cls.__init__
    else:
        cls.__init__ = old_init
    del cls._intern__old_init