Async Set Operations

[NirAgai]

No description provided.

[amitla]

@NirAgai
There are quite a few new public APIs that are not documented, please add documentation on all public APIs

[amitla]

In cases where you have methods that can only return the task without await-ing it, please do. in this case, the method should look something like this:

public static Task<TResult> RetryAsync<TResult>(Func<Task<TResult>> func, int maxAttempts)
{
    return RetryUtil.RetryAsync(func, maxAttempts);
}

the responsibility to await moves to the caller (keep in mind that the caller would have awaited the result anyway) this way you have one less async-await state machine in your result