/**
  * @return ProjectUGroup[]
  */
 public function getListOfInvolvedStaticUgroups(Tracker $template_tracker)
 {
     $project = $template_tracker->getProject();
     $ugroups = array();
     foreach ($this->permissions_dao->getAuthorizedStaticUgroupIds($template_tracker->getId()) as $id) {
         $ugroups[] = $this->ugroup_manager->getUGroup($project, $id);
     }
     return $ugroups;
 }