/// <summary>
/// Returns an instance of <see cref="DateTimeOffset"/> representing the start of the specified <strong>ISO 8601</strong> <paramref name="year"/> and <paramref name="week"/>.
/// </summary>
/// <param name="year">The <strong>ISO 8601</strong> year of the week.</param>
/// <param name="week">The <strong>ISO 8601</strong> week number.</param>
/// <param name="timeZone">The time zone to convert the <see cref="DateTimeOffset"/> value to.</param>
/// <returns>An instance of <see cref="DateTimeOffset"/>.</returns>
public static DateTimeOffset FromWeekNumber(int year, int week, TimeZoneInfo timeZone)
{
// Must have a time zone
if (timeZone == null)
{
throw new ArgumentNullException(nameof(timeZone));
}
// Get the start of the week
DateTimeOffset time = FromWeekNumber(year, week, timeZone.BaseUtcOffset);
// Adjust to the specified time zone
time = TimeUtils.AdjustForTimeZoneAndDaylightSavings(time, timeZone);
return(time);
}