docs: static Map<String, Object> makeLoggingMap(Properties props)
    {
      Map<String, Object> loggingMap = new HashMap<>();
  
      loggingMap.put(
          "loggerClass", props.getProperty("org.apache.druid.java.util.emitter.logging.class", LoggingEmitter.class.getName())
      );
      loggingMap.put(
          "logLevel", props.getProperty("org.apache.druid.java.util.emitter.logging.level", "debug")
      );
      return loggingMap;
    }