/**
  * @param \Render\APIs\APIv1\RenderAPI $api
  *
  * @return array
  */
 private function getAnchors($api)
 {
     $anchors = array();
     $allUnitData = $api->getAllUnitData();
     foreach ($allUnitData as $unitData) {
         if (isset($unitData['anchor'])) {
             if (isset($unitData['anchor']['id']) && isset($unitData['anchor']['name'])) {
                 $anchors[] = $unitData['anchor'];
             }
         }
     }
     return $anchors;
 }