{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"hir::ClosureKind::Coroutine(hir::CoroutineKind::Desugared("}]}
                hir::ClosureKind::Coroutine(hir::CoroutineKind::Desugared(
                // All `gen {}` and `async gen {}` must return unit.
                    hir::CoroutineDesugaring::Gen | hir::CoroutineDesugaring::AsyncGen,