/// <summary> /// Requires a Guid is empty /// </summary> /// <param name="val"></param> /// <param name="key"></param> /// <returns></returns> public Contract <T> IsEmpty(Guid val, string key) => IsEmpty(val, key, FluntErrorMessages.IsEmptyErrorMessage(key));
/// <summary> /// Requires a list contains no elements /// </summary> /// <typeparam name="TList"></typeparam> /// <param name="val"></param> /// <param name="key"></param> /// <returns></returns> public Contract <T> IsEmpty <TList>(IEnumerable <TList> val, string key) => IsEmpty(val, key, FluntErrorMessages.IsEmptyErrorMessage(key));