Publishing visual having free trial tier

Hello,

I created custom visual and want to place it in the AppSource. This documentation article says:

>The PBIX report must use the same version of the visual as the PBIVIZ.

Another article says that sample PBIX is required and:
> The sample .pbix report file must work offline, without any external connections.

Does offline means that the visual can't check the licence using Licensing API? How licenced visuals are suppose to work then? If  for example I define free trial tier then how can I verify that trial period expired without the connection to the Licensing API?

Best regards,

Damian Łoziński