{"ast_node_type":"function","tokens":[{"end":83,"kind":"keyword","start":0,"text":"fn"}]}
    fn get_lang_items<'tcx>(self, tcx: TyCtxt<'tcx>) -> &'tcx [(DefId, LangItem)] {
    /// Iterates over the lang items in the given crate.
        tcx.arena.alloc_from_iter(