{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"&ty::FnDef(def_id,"}]}
            &ty::FnDef(def_id, args) => Some((expr.span, def_id, args)),
        _ => match cx.typeck_results().node_type(expr.hir_id).kind() {
            _ => None,