code: function (excludeDisabled, caseSensitive) {
          // if the scope has no layers, we simply export the contents of primary store
          if (!this._layers) {
              return this.values.toObject(excludeDisabled, caseSensitive);
          }
  
          var mergedLayers = {};
  
          _.forEachRight(this._layers, function (layer) {
              _.assign(mergedLayers, layer.toObject(excludeDisabled, caseSensitive));
          });
  
          return _.assign(mergedLayers, this.values.toObject(excludeDisabled, caseSensitive));
      }
docs: Converts a list of Variables into an object where key is `_postman_propertyIndexKey` and value is determined
  by the `valueOf` function
  
  @param {Boolean} excludeDisabled
  @param {Boolean} caseSensitive
  @return {Object}