/**
* Set the specified file as the next version for the fragment.
*/
public function updateFromFile(PhabricatorUser $viewer, PhabricatorFile $file)
{
$existing = id(new PhragmentFragmentVersionQuery())->setViewer($viewer)->withFragmentPHIDs(array($this->getPHID()))->execute();
$sequence = count($existing);
$this->openTransaction();
$version = id(new PhragmentFragmentVersion());
$version->setSequence($sequence);
$version->setFragmentPHID($this->getPHID());
$version->setFilePHID($file->getPHID());
$version->save();
$this->setLatestVersionPHID($version->getPHID());
$this->save();
$this->saveTransaction();
$file->attachToObject($version->getPHID());
}
