private function savePermissions(Project $project, HTTPRequest $request)
 {
     $this->permissions_manager->savePermission($project, PermissionsManager::PERM_READ, $this->getUGroupsForPermission($request, PermissionsManager::PERM_READ));
     $this->permissions_manager->savePermission($project, PermissionsManager::PERM_WRITE, $this->getUGroupsForPermission($request, PermissionsManager::PERM_WRITE));
 }