Neos\Neos\Controller\Module\Management\WorkspacesController::updateAction PHP Method

    public function updateAction(Workspace $workspace)
    {
        if ($workspace->getTitle() === '') {
            $workspace->setTitle($workspace->getName());
        }
        $this->workspaceRepository->update($workspace);
        $this->addFlashMessage($this->translator->translateById('workspaces.workspaceHasBeenUpdated', [$workspace->getTitle()], null, null, 'Modules', 'Neos.Neos'));
        $this->redirect('index');
    }