syntax_data: {"ast_node_type":"variable","tokens":[{"end":38,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let kind = match self.kind() {
context_before:     fn super_fold_with<F: TypeFolder<TyCtxt<'tcx>>>(self, folder: &mut F) -> Self {
context_after:             ConstKind::Unevaluated(uv) => ConstKind::Unevaluated(uv.fold_with(folder)),