{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"CoroutineKind::Gen"}]}
            CoroutineKind::Gen { .. } => hir::CoroutineDesugaring::Gen,
            CoroutineKind::Async { .. } => hir::CoroutineDesugaring::Async,
            CoroutineKind::AsyncGen { span, .. } => {