/**
* Fetches all versions available to all repositories in the stack and returns them as a Linked collection.
*
* The returned collection contains versions groups sequentially into groups that correspond to each sub-repository.
* Each of those groups is sorted with the repository's own comparator. Therefore, its strongly recommended not to
* sort or modify the resulting collection.
*
* @return Collection
*/
public function fetchAll()
{
$collection = new Collection();
foreach ($this->getRepositories() as $repo) {
/** @var MigrationRepositoryInterface $repo */
$versions = $repo->fetchAll();
$collection->merge($versions);
}
return $collection;
}
