Consider a banking system where each account has a balance and an account number. Define a class called

BankAccount that represents a bank account with the following UML:

Astributes descriptions:

account$\_$number: client bank account number.

balance: the current balance of the account.

last$\_$transaction$\_$type: the type of the last transaction $("$Deposit$"$ or "Withdraw"$).$ It is $"-$ by default.

last$\_$transaction$\_$amount: the amount of the last transaction.

accounts$\_$count: static variable counts the number of accounts in the bank. The default value is $0.$

total$\_$balances: static variable defines the current balances of all accounts. The default value is

$10,000,000.$

In BankAccount Class, Write the code for the method 'withdraw' $[2$ pt$]$:

a$.$ withdraw $($ amount : double $)$ : withdraws the specified amount from the account.

b$.$ If sufficient funds are available: the method updates the balance by subtracting the amount, then

sets last$\_$transaction$\_$type to "Withdraw", and sets last$\_$transaction$\_$amount to the value of the

parameter 'amount'.

c$.$ Otherwise, If the amount is not avallable, a warning message should be displayed indicating that

"the amount is not available".

d$.$ This method updates the static variable "total$\_$balances' by subtracting the amount, if sufficient

funds are available.