new chnages

src/main/java/rocks/zipcode/quiz5/collections/Bank.java

 
     public Boolean containsBankAccount(BankAccount bankAccount) {
 
-        if (bank.contains(bankAccount)) {
-
-            return true;
-
-        } else {
-
-            return false;
-        }
+        return bank.contains(bankAccount);
     }
 }