Creating this issue as we spoke about the possibility to use Jandex a few times, so we have a one place for discussions.
Fast meta-data retrieval when using pre-existing index
Not so good documented
Implementation-wise it would make sense to implement this in form of another MetaDataProvider.
We could also make meta data providers more pluggable, so we don't have a strict dependeny to this. The Jandex provider would then be plugged in under AS while in other scenarios the normal annotation-based provider would be used.