original_string: private function writeHeaders()
      {
          $headers = $this->response->getHeaders();
          foreach ($headers as $name => $list) {
              header("$name: " . implode(', ', $list));
          }
      }
code: private function writeHeaders()
      {
          $headers = $this->response->getHeaders();
          foreach ($headers as $name => $list) {
              header("$name: " . implode(', ', $list));
          }
      }
code_tokens: private function writeHeaders ( ) { $ headers = $ this -> response -> getHeaders ( ) ; foreach ( $ headers as $ name => $ list ) { header ( "$name: " . implode ( ', ' , $ list ) ) ; } }
docstring: Write headers.
  
  @return void
docstring_tokens: Write headers .