public static void Set_EmailAddress(IModelEmailAddressesDep addressesDep, IModelEmailAddress address) => addressesDep.Email = address?.Address;
public static IModelList <IModelEmailAddress> Get_EmailAddresses(IModelEmailAddressesDep addressesDep) => addressesDep.GetParent <IModelEmail>().EmailAddress;
public static IModelEmailAddress Get_EmailAddress(IModelEmailAddressesDep addressesDep) => addressesDep.EmailAddresses[addressesDep.Email];