private LoggingContext loggingContext() {
        LoggingContext result = loggingContext.get();
        Objects.requireNonNull(result);
        return result;
    }
If configured to use a connector-specific offset store,
{@link OffsetBackingStore#configure(WorkerConfig) configure} that store.

<p>The worker-global offset store is not modified; it is the caller's responsibility to ensure that it is configured
before calls to {@link #start()}, {@link #get(Collection)} and {@link #set(Map, Callback)} take place.
connect/runtime/src/main/java/org/apache/kafka/connect/storage/ConnectorOffsetBackingStore.java