{"ast_node_type":"variable","tokens":[{"end":28,"kind":"keyword","start":0,"text":"let"}]}
        let sess = tcx.sess;
    pub fn load_macro_untracked(&self, id: DefId, tcx: TyCtxt<'_>) -> LoadedMacro {
        let _prof_timer = sess.prof.generic_activity("metadata_load_macro");