We are migrating to the new android app bundle format and I'd like to keep signing my aab files with the same signing plugin. Is it possible with existing signing plugin implementation?
To be quite honest, I don't know. Do you have a build you can try already? I'll look into it when I get a few spare moments in the next couple of days.
Some brief research unfortunately reveals that the plugin cannot sign AABs, currently. I can probably get around to implementing a solution that uses Java's JarSigner API. In the interim, you should be able to use Java's `jarsigner` command-line utility and the Credentials Binding Plugin to sign your AABs. Just be aware of some of the security concerns that go along with that approach.