{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"//"}]}
                    // If `x` is a newtype around an `Interned<T>`, then `interner` is an
                fn _test<'tcx>(x: $lifted, tcx: TyCtxt<'tcx>) {
                    // interner of appropriate type. (Ideally we'd also check that `x` is a