{"ast_node_type":"function","tokens":[{"end":62,"kind":"keyword","start":0,"text":"fn"}]}
fn fn_kind<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId) -> FnKind {
    debug_assert_matches!(tcx.def_kind(def_id), DefKind::Fn | DefKind::AssocFn);