Creates a future containing the result of calling computation asynchronously with scheduleMicrotask.
Creates a future containing the result of calling computation asynchronously with scheduleMicrotask.
If executing computation throws, the returned future is completed with the thrown error.
If calling computation returns a Future, completion of the created future will wait until the returned future completes, and will then complete with the same result.
If calling computation returns a non-future value, the returned future is completed with that value.