{"ast_node_type":"function","tokens":[{"end":94,"kind":"keyword","start":0,"text":"fn"}]}
                fn try_fold_with<F: $crate::ty::FallibleTypeFolder<$crate::ty::TyCtxt<'tcx>>>(
            impl<'tcx> $crate::ty::TypeFoldable<$crate::ty::TyCtxt<'tcx>> for $ty {
                    self,