syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"ty::Slice(typ)"}]}
source_snippet:             ty::Slice(typ) => ty::Slice(typ.fold_with(folder)),
context_before:             ty::Array(typ, sz) => ty::Array(typ.fold_with(folder), sz.fold_with(folder)),
context_after:             ty::Adt(tid, args) => ty::Adt(tid, args.fold_with(folder)),