{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"hir::CoroutineDesugaring::Async"}]}
                            hir::CoroutineDesugaring::Async => LangItem::Future,
                        let lang_item = match desugaring {
                            hir::CoroutineDesugaring::AsyncGen => LangItem::AsyncIterator,