/**
  * @param string $name
  * @param string $revision
  * @param string $prefix
  * @return \Webcreate\Conveyor\Repository\Version
  */
 protected function createVersion($name, $revision, $prefix = null)
 {
     $name = ($prefix ? $prefix . '-' : '') . $name;
     $version = new Version();
     $version->setName($name);
     $version->setBuild($revision);
     return $version;
 }