{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"GenBlockKind::Gen"}]}
                        GenBlockKind::Gen => hir::CoroutineDesugaring::Gen,
                        GenBlockKind::Async => hir::CoroutineDesugaring::Async,
                        GenBlockKind::AsyncGen => hir::CoroutineDesugaring::AsyncGen,