/// <summary>
/// A method for completing an account withdrawal through the database.
/// </summary>
/// <param name="accountNumber">The number of the account that the user wishes to withdraw from.</param>
/// <param name="withdrawAmount">The amount that the user wishes to withdraw.</param>
private void completeWithdrawal(int accountNumber, double withdrawAmount)
{
aDatabase.withdrawFromAccount(accountNumber, withdrawAmount);
}