/**
* You job is to create a simple banking application.
* There should be a Bank class
* It should have an arraylist of Branches
* Each Branch should have an arraylist of Customers
* The Customer class should have an arraylist of Doubles (transactions)
* Customer:
* - Name, and the ArrayList of doubles.
* Branch:
* - Need to be able to add a new customer and initial transaction amount.
* - Also needs to add additional transactions for that customer/branch
* Bank:
* - Add a new branch
* - Add a customer to that branch with initial transaction
* - Add a transaction for an existing customer for that branch
* - Show a list of customers for a particular branch and optionally a list of their transactions
* Demonstration autoboxing and unboxing in your code
* Hint: Transactions
* Add data validation.
* e.g. check if exists, or does not exist, etc.
* Think about where you are adding the code to perform certain actions
*/