public MaestroHandler(BasicHandler successor) : base(successor) { }
public MastercardHandler(BasicHandler successor) : base(successor) { }
public VisaHandler(BasicHandler successor) : base(successor) { }
public MaestroHandler(BasicHandler successor) : base(successor) { }
public MastercardHandler(BasicHandler successor) : base(successor) { }
public VisaHandler(BasicHandler successor) : base(successor) { }