/**
* @param Vertex $vertex
* @return array
*/
private function extractVertex(Vertex $vertex)
{
$locations = $this->extractEntities($vertex->getAttribute('locations', array()));
return array('name' => $vertex->getId(), 'usedByCount' => $vertex->getEdgesIn()->count(), 'adt' => $vertex->getAttribute('adt', array()), 'location' => array_shift($locations), 'group' => $vertex->getGroup());
}