def factory(): async_def_(lambda: [await_[a, b]])
def factory(): async_def_(lambda: [await_[a].b[c].d[e]])
def factory(): async_def_(lambda: [def_(lambda: [async_with_[a][b]])])
def factory(): async_def_(lambda: [def_(lambda: [await_[a]])])
def factory(): async_def_(lambda: [def_(lambda: [async_for_[a][b]])])