{"ast_node_type":"function","tokens":[{"end":58,"kind":"keyword","start":0,"text":"fn"}]}
    fn visit_ty(&mut self, ty: Ty<'tcx>) -> Self::Result {
impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for UncoveredTyParamCollector<'_, 'tcx> {
        if !ty.has_type_flags(ty::TypeFlags::HAS_TY_INFER) {