FileCollection::getCopies

public function getCopies(?Storage $storage = null): self
{
	$userId = $this->getContext()->getUserId();
	$storage = $storage ?? Driver::getInstance()->getStorageByUserId($userId);
	$copies = new static();

	foreach ($this as $fileEntity)
	{
		$copy = $fileEntity->getCopy($storage);
		if ($copy !== null)
		{
			$copies[] = $copy;
		}
	}

	return $copies;
}