{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"CoroutineKind::Async"}]}
            CoroutineKind::Async { .. } => hir::CoroutineDesugaring::Async,
        let coroutine_desugaring = match coroutine_kind {
            CoroutineKind::Gen { .. } => hir::CoroutineDesugaring::Gen,