syntax_data: {"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"ConstKind::Unevaluated(uv)"}]}
source_snippet:             ConstKind::Unevaluated(uv) => ConstKind::Unevaluated(uv.fold_with(folder)),
context_before:         let kind = match self.kind() {
context_after:             ConstKind::Value(v) => ConstKind::Value(v.fold_with(folder)),