When trying to follow the tutorial here, one issue is that FidelityParams and Annotation classes are generated into the "AndroidPerformancetuner_gen" folder. That folder doesn't have an asmdef, so it can't be easily included.

It can be fixed by manually creating a .asmdef file and adding the protobuf dependecy to it, but that's an extra step that's not mentioned in the tutorial and requires some digging into it.