{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"assert!(self.owner.is_none());"}]}
        assert!(self.owner.is_none());
    fn check<F: FnOnce(&mut HirIdValidator<'a, 'hir>)>(&mut self, owner: hir::OwnerId, walk: F) {
        self.owner = Some(owner);