@Override
        public String toString() {
            return "WorkerState{" +
                    "url='" + url + '\'' +
                    ", offset=" + offset +
                    '}';
        }
The most up-to-date (maximum) configuration offset known to this worker.

@return the configuration offset
connect/runtime/src/main/java/org/apache/kafka/connect/runtime/distributed/ConnectProtocol.java