StorageAndEvaluatorCoordinatorsWithOffsets sets up a Coordinator with a single caching module defined.

CachingEvaluator is an evaluator module that responds to evaluation requests and checks consumer status using the standard Burrow definitions for stall, stop, and lag.

Coordinator manages a single evaluator module (only one module is supported at this time), making sure it is configured, started, and stopped at the appropriate time.

Module is responsible for answering requests to evaluate the status of a consumer group.