/// <summary> /// Create a tracking instance, shortcut for This.Track(that.LastOrDefault) /// </summary> /// <typeparam name="T">Quantity Type</typeparam> /// <param name="This">Update Timer</param> /// <param name="that"></param> /// <returns></returns> public static Tracking <T> Track <T>(this IIndicator This, IReadOnlyList <T> that) => This.Track(that.LastOrDefault);