/**
  * function __construct
  * <pre>
  * Initialize the Class ...
  * </pre>
  * @param $viewer_id [INTEGER] value used to initialize the list.
  * @param $sortBy [STRING] the field name to sort list by
  * @return [void]
  */
 function __construct($viewer_id = -1, $sortBy = '')
 {
     $searchManager = new RowManager_ViewerAccessGroupManager();
     // NOTE: if you need to narrow the field of the search then uncommnet
     // the following and set the proper search criteria.
     $searchManager->setValueByFieldName("viewer_id", $viewer_id);
     //$searchManager->setValueByFieldName('module_isCommonLook', '1' );
     $searchManager->setSortOrder($sortBy);
     $this->resultSet = $searchManager->find();
 }