//will do an action on all of the customers
public void DoToAllCustomers(CustomerAction action)
{
foreach (Customer customer in _customers)
{
action.Invoke(customer);
if (customer.Balance >= 1000000)
{
UnreasonableCustomerBalanceEventArgs args = new UnreasonableCustomerBalanceEventArgs(customer.Balance);
OnUnreasonableCustomerBalance?.Invoke(customer, args);
}
}
}