public function getCompleteSnapshotsForVolumes(array $volumeIds)
 {
     return $this->client->describeSnapshots(array('Filters' => array(array('Name' => 'volume-id', 'Values' => $volumeIds), array('Name' => 'status', 'Values' => array('completed')), array('Name' => 'tag-key', 'Values' => array('AutomatedBackup')))))->get('Snapshots');
 }