docs: public Level getEffectiveLevel() {
          if (slf4jLogger.isTraceEnabled()) {
              return Level.TRACE;
          }
          if (slf4jLogger.isDebugEnabled()) {
              return Level.DEBUG;
          }
          if (slf4jLogger.isInfoEnabled()) {
              return Level.INFO;
          }
          if (slf4jLogger.isWarnEnabled()) {
              return Level.WARN;
          }
          return Level.ERROR;
      }