def tree_post_save_handler(sender, instance, **kwargs):
    # TODO: Does not find everything it should when ContentProxy content
    # inheritance has been customized.
    instance.get_descendants(include_self=True).update(_ct_inventory=None)


# ------------------------------------------------------------------------
Clobber the _ct_inventory attribute of this object and all sub-objects
dataset/ETHPy150Open feincms/feincms/feincms/module/extensions/ct_tracker.py/tree_post_save_handler