[Dragonpay] How to test the «Refund», «Chargeback» and «Void» responses?

Extensions Dragonpay
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1

They are mentioned on the page 29 of the «Dragonpay Online Payment - Merchant Payment Switch API» (Version 1.00, Jul 1, 2016):

2

I have got an answer from the Dragonpay support:

You can ignore these as well. These are internal statuses for future support of credit cards.
They are not yet used.