这个函数返回值能配上吗？

``` // Waits for a random time between two durations and sends the current time on // the returned channel. func afterBetween(min time.Duration, max time.Duration) <-chan time.Time { rand := rand.New(rand.NewSource(time.Now().UnixNano())) d, delta := min, (max - min) if delta > 0 { d += time.Duration(rand.Int63n(int64(delta))) } return time.After(d) ///After是标准库里的， 返回的是bool } ``` 上面的time.After(d)和 <-chan time.Time 怎么匹配的？