Pretty sure Powermock is dead in the water now, it did some pretty gnarly things (like patching `Object`) that flat out didn't work in later versions of Java.

I (ironically enough) spent some time replacing usages of it in Kafka test code with Mockito because of this, IIRC there was only one situation where Mockito couldn't easily replace Powermock and I'm pretty sure it was mocking out a private static method, so the solution was to refactor the code under test so that you didn't need to mock a private static method to test it.