code: public function findTransverseBlock($component, $siteId, $language)
      {
          $qa = $this->createAggregationQueryBuilderWithSiteIdAndLanguage($siteId, $language, true);
  
          $qa->match(array(
              'component' => $component
          ));
  
          return $this->hydrateAggregateQuery($qa);
      }
docs: @param string $component
  @param string $siteId
  @param string $language
  
  @return array