The model definition metadata discussion in the Create your own Core image tutorial is the only metadata I know about:
{
"type": "model",
"series": "16",
"model": "joule",
"architecture": "amd64",
"gadget": "joule",
"kernel": "joule-linux",
"authority-id": "TODO",
"brand-id": "TODO",
"timestamp": "TODO"
}
How do I specify that this model should be using a brand store?