Github user jdye64 commented on the issue:
https://github.com/apache/nifi-registry/pull/133
Ok. After reading through all of these I'm thinking the best way to handle
this and have it operate the way I had envisioned is to take the approach of
adding the handleEvent() method in the EventProvider interface as outlined
above. I'm going to start on that now and just remove the Abstract class all
together.---
