/**
  * 
  * @param type $params
  * @return \yii\data\ActiveDataProvider
  */
 public function search($params = [])
 {
     $query = ServiceUser::find();
     $dataProvider = new ActiveDataProvider(['query' => $query, 'pagination' => ['pageSize' => WidgetPageSize::getPageSize()]]);
     if (!($this->load($params) && $this->validate())) {
         return $dataProvider;
     }
     return $dataProvider;
 }