syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"ty::Alias(kind,"}]}
source_snippet:             ty::Alias(kind, data) => ty::Alias(kind, data.fold_with(folder)),
context_before:             ty::CoroutineClosure(did, args) => ty::CoroutineClosure(did, args.fold_with(folder)),
context_after:             ty::Pat(ty, pat) => ty::Pat(ty.fold_with(folder), pat.fold_with(folder)),