/// <summary>
/// Creates an operation that completes after a time delay.
/// </summary>
/// <param name="delay">The time span to wait before completing the returned operation, or <c>TimeSpan.FromMilliseconds(-1)</c> to wait indefinitely.</param>
/// <exception cref="ArgumentOutOfRangeException">Thrown if the <paramref name="delay"/> represents a negative time interval other than <c>TimeSpan.FromMillseconds(-1)</c>.</exception>
/// <returns>An operation that represents the time delay.</returns>
/// <seealso cref="Delay(int)"/>
/// <seealso cref="Delay(float)"/>
public static IAsyncOperation Delay(TimeSpan delay)
{
return(AsyncResult.Delay(delay, _rootBehaviour.UpdateSource));
}
/// <summary>
/// Creates an operation that completes after a time delay.
/// </summary>
/// <param name="secondsDelay">The number of seconds to wait before completing the returned operation, or -1 to wait indefinitely.</param>
/// <exception cref="ArgumentOutOfRangeException">Thrown if the <paramref name="secondsDelay"/> is less than -1.</exception>
/// <returns>An operation that represents the time delay.</returns>
/// <seealso cref="Delay(int)"/>
/// <seealso cref="Delay(TimeSpan)"/>
public static IAsyncOperation Delay(float secondsDelay)
{
return(AsyncResult.Delay(secondsDelay, _rootBehaviour.UpdateSource));
}