public function __construct(Functionset $functionSet, Parser\Value $valueParser, Hook\ElementData $elementData, Hook\Formatter $formatter, Parser\CssToXpath $xPath, FilePath $filePath, &$headers) { $this->formatter = $formatter; $this->headers =& $headers; $this->filePath = $filePath; $this->functionSet = $functionSet; $this->elementData = $elementData; $this->xPath = $xPath; $this->valueParser = $valueParser; }