RecordViewWidgetManager.prototype._init = function () {
    this._hiddenWidgetsMenuSelector = '#x2-hidden-widgets-menu';
    this._hiddenWidgetsMenuItemSelector = 
        '.x2-hidden-widgets-menu-item.' + this.widgetType + '-widget';
    this._setUpRecordViewTypeToggleBehavior ();
    this._widgetsBoxSelector = '#' + this.cssSelectorPrefix + 'widgets-container-2';
    this._widgetsBoxSelector2 = '#' + this.cssSelectorPrefix + 'widgets-container-inner';

    SortableWidgetManager.prototype._init.call (this);
};
The product receives input or data, but it does
        not validate or incorrectly validates that the input has the
        properties that are required to process the data safely and
        correctly.