original_string: private function initializeClient($url, HttpClient $client = null)
      {
          if ($client) {
              return $this->client = $client;
          }
  
          return $this->client = $this->createDefaultHttpClient($url);
      }
code: private function initializeClient($url, HttpClient $client = null)
      {
          if ($client) {
              return $this->client = $client;
          }
  
          return $this->client = $this->createDefaultHttpClient($url);
      }
code_tokens: private function initializeClient ( $ url , HttpClient $ client = null ) { if ( $ client ) { return $ this -> client = $ client ; } return $ this -> client = $ this -> createDefaultHttpClient ( $ url ) ; }
docstring: initializes the http client.
  
  @param string     $url
  @param HttpClient $client
  
  @return HttpClient
docstring_tokens: initializes the http client .