docs: function normalizeLevel(level) {
    if (level.value <= Logger.Level.ALL.value) {          // ALL is 0.
      return Logger.Level.ALL;
  
    } else if (level.value === Logger.Level.OFF.value) {  // OFF is Infinity
      return Logger.Level.OFF;
  
    } else if (level.value < Logger.Level.INFO.value) {
      return Logger.Level.DEBUG;
  
    } else if (level.value < Logger.Level.WARNING.value) {
      return Logger.Level.INFO;
  
    } else if (level.value < Logger.Level.SEVERE.value) {
      return Logger.Level.WARNING;
  
    } else {
      return Logger.Level.SEVERE;
    }
  }