{"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"let"}]}
        let nested_trait_item = self.tcx.unwrap().hir_trait_item(trait_item_id);
    fn visit_nested_trait_item(&mut self, trait_item_id: hir::TraitItemId) {
        self.visit_trait_item(nested_trait_item)