docs: function setLevel(level) {
          if (typeof(level) === "number") {
              if (level >= 0 && level <= 5) {
                  _level = level;
              } else {
                  invalidParameter(level);
              }
          } else if (typeof(level) === 'string') {
              if (Level.hasOwnProperty(level)) {
                  _level = Level[level];
              } else {
                  invalidParameter(level);
              }
          } else {
              invalidParameter(level);
          }
          return createObject();
      }