{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"(TyKind::Coroutine(coroutine_a,"}]}
            (TyKind::Coroutine(coroutine_a, sub_a), TyKind::Coroutine(coroutine_b, sub_b))
            }
                if coroutine_a == coroutine_b =>