using Algorithms.IdCard; public class IDCard { private Name name; private PostalCode postalCode; private TelephonNumber telephonNumber; public IDCard(Name name, PostalCode postalCode, TelephonNumber telephonNumber) { this.name = name; this.postalCode = postalCode; this.telephonNumber = telephonNumber; } public bool IsValid() { return name.IsValid() && telephonNumber.IsValid() && postalCode.IsValid(); } }