{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"hir::CoroutineDesugaring::Async,"}]}
                        hir::CoroutineDesugaring::Async,
                    hir::ClosureKind::Coroutine(hir::CoroutineKind::Desugared(
                        hir::CoroutineSource::Fn,