"void Execute$()$

Executes the withdraw transaction and its underlying tasks. First of all, it changes the $\_$executed status to true.

This method debits the associated $\_$account deducting the specified $\_$amount. It throws an

InvalidOperationException when the transaction has been already attempted and specifies the reason for

this exception. It also throws this type of exception when the associated account has insufficient funds. When

the operation succeeds, it updates the $\_$success field of the class setting its value to true.

SIT$232$ Object$-$Oriented Development Trimester $1,2024$

$2$

$$ void Rollback$()$

Performs a reversal of the preceding withdraw operation. This method deposits the funds back into the

associated $\_$account if the withdraw transaction was successful and has not been reversed yet. When the

rollback operation is successful, it updates the $\_$reversed field of the class. This method must throw an

InvalidOperationException indicating the particular error when the original withdraw operation has not

been finalized or when it has been already reversed." Can someone explain to me the sole purpose of the rollback and execute methods as well as how to implement them correctly based on the UML design. $($This is also C# code$)$