 else {
          previousValue = this.activeElement[name];
          // If this is a dom-repeat, don't set the items attribute, set a fake
          // items instead (so that it doesn't stamp).
          if (this.activeElement.localName === 'dom-repeat' && name === 'items') {
            this.activeElement.dataset['fakeItemsAttr'] = value;
          } else if (value === 'true') {
            this._setPropertyOrValue(name, true, isAttribute);
          } else if (value === 'false') {
            if (this.ac