public static MandoCharacterDetail ToMandoCharacterDetail(this MandoCharacter mandoCharacter)
 => new MandoCharacterDetail
 {
     ID        = mandoCharacter.ID,
     InSeason1 = mandoCharacter.InSeason1,
     InSeason2 = mandoCharacter.InSeason2,
     Name      = mandoCharacter.Name,
     Performer = mandoCharacter.Performer,
 };
 private static MandoCharacterOverview ToMandoCharacterOverviewItem(this MandoCharacter mandoCharacter)
 => new MandoCharacterOverview
 {
     Id   = mandoCharacter.ID,
     Name = mandoCharacter.Name,
 };