{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"&ty::FnDef(def_id,"}]}
                    &ty::FnDef(def_id, fn_gen_args) => {
                match cx.typeck_results().node_type(callee.hir_id).kind() {
                        (callee.span, def_id, fn_gen_args, collect_args_tys_and_spans(args, false))