{"ast_node_type":"variable","tokens":[{"end":56,"kind":"keyword","start":0,"text":"if"}]}
            if let hir::TyKind::OpaqueDef(..) = t.kind {
        fn visit_ty(&mut self, t: &'tcx hir::Ty<'tcx, AmbigArg>) -> Self::Result {
                ControlFlow::Break(())