'Returns a list of plugin types that are allowed
as children of this plugin.'

@classmethod
def get_child_class_overrides(cls, slot, page):

    from cms.utils.placeholder import get_placeholder_conf
    template = ((page and page.get_template()) or None)
    ph_conf = get_placeholder_conf('child_classes', slot, template, default={})
    return ph_conf.get(cls.__name__, cls.child_classes)
