/**
  * @param Project $project
  * @return User_ForgeUGroup[]
  */
 private function getStaticByProject(Project $project)
 {
     $user_groups = array();
     $rows = $this->dao->getExistingUgroups($project->getID());
     if (!$rows) {
         return $user_groups;
     }
     foreach ($rows as $row) {
         $user_groups[] = $this->instantiateFromRow($row);
     }
     return $user_groups;
 }