syntax_data: {"ast_node_type":"variable","tokens":[{"end":48,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let new = self.kind().fold_with(folder);
context_before:     fn super_fold_with<F: TypeFolder<TyCtxt<'tcx>>>(self, folder: &mut F) -> Self {
context_after:         folder.cx().reuse_or_mk_predicate(self, new)