\Magento\MediaStorage\Model\File\Storage\Synchronization::synchronize() contains a wrong PHPDoc comment for the $file variable

https://github.com/magento/magento2/blob/2.0.0/app/code/Magento/MediaStorage/Model/File/Storage/Synchronization.php#L59-L60

Should be

/** @var \Magento\Framework\Filesystem\File\WriteInterface $file */

https://github.com/magento/magento2/issues/2558

See also: