code: function WebTreeStore(storageObject, storageId, dataChanged) {
              this.storage = storageObject;
              this.id = storageId;
              this._setItem(this.id + "-tree", true);
              this.dataChanged = dataChanged;
          }
docs: Creates a new instance of class WebTreeStore.
  @access public
  @augments WebStore
  @constructs WebTreeStore