/// <summary>
/// If you want to find items in larger list that are not present in small list
/// </summary>
/// <param name="largerList">"A","B","C"</param>
/// <param name="smallerList">"A"</param>
/// <returns>"B","C"</returns>
public static string[] FindItemsNotInSmallerStringArray(this string[] largerList, string[] smallerList) => largerList.Except(smallerList).ToArray();