{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"hir::CoroutineDesugaring::Gen"}]}
                    hir::CoroutineDesugaring::Gen | hir::CoroutineDesugaring::AsyncGen,
                hir::ClosureKind::Coroutine(hir::CoroutineKind::Desugared(
                    _,