std.concurrency and sendWithDelay

[Christian Köstlin via Digitalmars-d-learn]

I really like the std.concurrency
(https://dlang.org/phobos/std_concurrency.html) with spawn, send,
receive ...

Is there a builtin way to schedule core or an event after a delay (e.g.
in android:
https://developer.android.com/reference/android/os/Handler.html#postDelayed(java.lang.Runnable,
long) or
https://developer.android.com/reference/android/os/Handler.html#sendMessageDelayed(android.os.Message,
long) ).

thanks in advance,
christian koestlin