/// <summary>
/// Determines whether the actual date time is close to an expected value within a given within.
/// </summary>
/// <param name="check">The fluent check to be extended.</param>
/// <param name="expected">The expected value.</param>
/// <param name="within">The within.</param>
/// <returns>A continuation check.</returns>
public static ICheckLink <ICheck <DateTime> > IsCloseTo(this ICheck <DateTime> check, DateTime expected, TimeSpan within)
{
return(check.IsCloseTo(expected, Duration.FromTimeSpan(within)));
}