public Deposit( int userPIN, Screen atmScreen, BankDatabase atmBankDatabase, DepositSlot atmDepositSlot, CashDispenser atmCashDispenser ) 
     : base( userPIN, atmScreen, atmBankDatabase )
 {
     depositSlot = atmDepositSlot;
     cashDispenser = atmCashDispenser;
 }
 public Withdrawal( int userPIN, Screen atmScreen, BankDatabase atmBankDatabase, CashDispenser atmCashDispenser )
     : base( userPIN, atmScreen, atmBankDatabase )
 {
     cashDispenser = atmCashDispenser;
 }