public function countUsers(Workspace $workspace, $includeGrps = false)
 {
     if ($includeGrps) {
         $wsRoles = $this->roleManager->getRolesByWorkspace($workspace);
         return $this->container->get('claroline.manager.user_manager')->countByRoles($wsRoles, true);
     }
     return $this->workspaceRepo->countUsers($workspace->getId());
 }