Usage from within Unity

I tried using these tools from inside Unity to analyze import artifacts and for build postprocessors of generated data, which to be best of my understanding fall under SerializedFile.

However, it seems that the app doesn't properly work with domain load and unload, after a first attempt I'm always getting

for subsequent tries.
Are there plans to get this to work?

I found a relevant comment in the UnityFileSystem constructor that leads me to believe this is a bug / not implemented:

static UnityFileSystem()
{
    // Initialize the native library.
    var r = DllWrapper.Init();
    HandleErrors(r);
            
    // TODO: should Cleanup be called by the AppDomain.Unload event or something else?
}

Start with the UnityFileSystem static constructor and its DllWrapper.Init call, then inspect the TODO about cleanup during AppDomain.Unload. Reproduce the failure by loading and unloading the domain, then trying another analysis. Done means repeated use from Unity works without the reported error and native-library cleanup is handled appropriately.