{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"("}]}
        ( Desugared(hir::CoroutineDesugaring::Gen, hir::CoroutineSource::Block)        )
        ( Coroutine(hir::Movability::Static)                                           )
        ( Desugared(hir::CoroutineDesugaring::Gen, hir::CoroutineSource::Fn)           )