{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"LangItem::AsyncFn"}]}
        LangItem::AsyncFn => WellKnownTrait::AsyncFn,
        LangItem::FnOnce => WellKnownTrait::FnOnce,
        LangItem::AsyncFnMut => WellKnownTrait::AsyncFnMut,