code: public function prepareRules(IFilter $objFilter, $arrFilterUrl)
      {
          $this->filterParameters = $arrFilterUrl;
          $this->queryString      = $this->get('customsql');
          $this->queryParameter   = [];
  
          $objFilter->addFilterRule($this->getFilterRule());
  
          unset($this->filterParameters);
          unset($this->queryString);
          unset($this->queryParameter);
      }
docs: {@inheritdoc}