{"ast_node_type":"function","tokens":[{"end":87,"kind":"keyword","start":0,"text":"fn"}]}
    fn from_raw(fcx: &FnCtxt<'_, 'tcx>, span: Span, raw: Ty<'tcx>) -> LoweredTy<'tcx> {
impl<'tcx> LoweredTy<'tcx> {
        // FIXME(-Znext-solver=no): This is easier than requiring all uses of `LoweredTy`