What kind of content can be used for marketing your asset?

If I have a technical/code only asset that cannot really be shown off on its own in a trailer, but I don’t have my own animations, models etc., is any of the following scenarious allowed?

  1. Use free and/or paid marketplace assets (other than Epic Games content) in a trailer to show off what the code can do. Of course these wouldn’t be distributed with the asset, they would just serve as demonstrations for the trailer, and a note at the beginning of the trailer would inform the viewer of this.

  2. Make tutorials for your asset and link them on the marketplace page in which free and/or paid marketplace content is used.

  3. Tutorials of the same kind that are not linked on the marketplace page, e.g. in a discord server for people who have bought the asset.

Thanks for any help.