{"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"LangItem::AsyncFnOnce"}]}
            LangItem::AsyncFnOnce => Some(FnTrait::AsyncFnOnce),
            LangItem::Fn => Some(FnTrait::Fn),
            LangItem::AsyncFnMut => Some(FnTrait::AsyncFnMut),