# go to {nav E-commerce > Orders} section
# press `Add` button
# press `Billing` tab
# on `Billing` tab fill only `Credit Card Number` field with `411111111111111` value and press `Save` button
# confirm, that after page refresh `Card Type` is automatically detected as `Visa`
# change OrdersEventHandler::OnBeforeItemUpdate method to call `$order_helper->getCreditCartType` instead of `$order_helper->getCreditCardType`
# set empty value for `Card Type` on `Billing` tab
# press `Save` button on `Billing` tab
# confirm, that after page refresh `Card Type` is automatically detected as `Visa`
# confirm, that after page refresh notice about deprecated method usage appeared in debugger output