New: How is this digital content created? "With an AI generator"

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This shows as an option for listings when you manually look at your product, but there is no documentation to be found to use it in the API

How is this digital content created?

1. It’s designed and created entirely by me.
2. With an AI generator

This was just intriduced as a new option and being told it has to be selected, but no documentation for it anywhere i can find.
Any help would be much appreciated.