/// <summary> /// Determines whether [is valid standard code] [the specified delivery]. /// </summary> /// <param name="delivery">The delivery.</param> /// <returns> /// <c>true</c> if [is valid standard code] [the specified delivery]; otherwise, <c>false</c>. /// </returns> public bool IsValidStandardCode(ILearningDelivery delivery) => _larsData.ContainsStandardFor(delivery.StdCodeNullable.Value);