docs: function reverse() {
      /* jshint validthis:true */
      var _ = this._sortedArray,
          reversed = _.reversed;
  
      if (reversed) {
          this.comparator = this.comparator.original;
      } else {
          this.comparator = getInversionOf(this.comparator);
      }
      _.reversed = !reversed;
  
      _.reverse.call(this);
  }