original_string: public function getArticle($articleNumber)
      {
          $requestData = new Get\RequestData();
          $requestData->setArticleNumber($articleNumber);
  
          $request = new Get\Request($requestData);
          $request->setLimit(1);
  
          /** @var Get\ApiResponse $apiResponse */
          $apiResponse = $this->sendRequest($request, Get\ApiResponse::class);
          $articles = $apiResponse->getResponse()->getArticles();
  
          return isset($articles[0]) ? $articles[0] : null;
      }
code: public function getArticle($articleNumber)
      {
          $requestData = new Get\RequestData();
          $requestData->setArticleNumber($articleNumber);
  
          $request = new Get\Request($requestData);
          $request->setLimit(1);
  
          /** @var Get\ApiResponse $apiResponse */
          $apiResponse = $this->sendRequest($request, Get\ApiResponse::class);
          $articles = $apiResponse->getResponse()->getArticles();
  
          return isset($articles[0]) ? $articles[0] : null;
      }
code_tokens: public function getArticle ( $ articleNumber ) { $ requestData = new Get \ RequestData ( ) ; $ requestData -> setArticleNumber ( $ articleNumber ) ; $ request = new Get \ Request ( $ requestData ) ; $ request -> setLimit ( 1 ) ; /** @var Get\ApiResponse $apiResponse */ $ apiResponse = $ this -> sendRequest ( $ request , Get \ ApiResponse :: class ) ; $ articles = $ apiResponse -> getResponse ( ) -> getArticles ( ) ; return isset ( $ articles [ 0 ] ) ? $ articles [ 0 ] : null ; }
docstring: Get one article by article number.
  
  @param string $articleNumber Article number of the article to get.
  @return Article|null
docstring_tokens: Get one article by article number .