How to add a GeneratedClassBuildItem to CombinedIndex in Quarkus Extension.

[skku-daniilkim]

Hello,

I am writing an extension that generates classes via GeneratedClassBuildItem. How can I add my newly generated classes to CombinedIndexBuildItem? I tried using AdditionalIndexedClassBuildItem, but it seems like they are processed, before the classes themselves are generated, so I get a Failed to index ... stream cannot be null error. Using GeneratedBeanBuildItem does not add my class to the index, and at least in my case seems to yield identical to GeneratedClassBuildItem results.