@Override
    public Map<String, LoggerLevel> allLoggerLevels() {
        return loggers.allLevels();
    }
Service external requests to alter or reset connector offsets.
@param connName the name of the connector whose offsets are to be modified
@param offsets the offsets to be written; this should be {@code null} for offsets reset requests
@param cb callback to invoke upon completion
connect/runtime/src/main/java/org/apache/kafka/connect/runtime/AbstractHerder.java