view-by-distance-mklink-console/Shared/Models/Stateless/Methods/IItem.cs

namespace View_by_Distance.Shared.Models.Stateless.Methods;

public interface IItem
{ // ...

    string TestStatic_GetWrongYearFlag(bool? isWrongYear);
    static string GetWrongYearFlag(bool? isWrongYear) => isWrongYear is null ? "#" : isWrongYear.Value ? "~" : "=";

}