/**
* {@inheritdoc}
*
* @param Migrated $versions
*
* @return int
*
* @throws StorageException
*/
public function saveCollection(Migrated $versions)
{
$ids = array_map(function (VersionInterface $v) {
return $v->getId();
}, $versions->toArray());
$contents = implode("\n", $ids);
$result = $this->file->put($contents);
if ($result === false) {
throw new StorageException(sprintf('Could not write to file "%s".', $this->file->getPath()));
}
return (bool) $result;
}