{"ast_node_type":"variable","tokens":[{"end":45,"kind":"keyword","start":0,"text":"let"}]}
        let parent_id = tcx.local_parent(id);
    if let DefKind::AssocFn = tcx.def_kind(id) {
        if let DefKind::Trait | DefKind::Impl { of_trait: true } = tcx.def_kind(parent_id) {