public function transformFile(array $data)
    {
        return $this->filterManager->apply(
            $this->dataManager->find('original', $data['filename']),
            array(
                'filters' => array(
                    'crop'=> array(
                        'start' => array($data['x'], $data['y']),
                        'size' => array($data['width'], $data['height'])
                    )
                )
            )
        );
    }