'#description'=>t('Visitors will only see the maintenance mode message. Only users with the "Access site in maintenance mode" <a href=":permissions-url">permission</a> will be able to access the site. Authorized users can log in directly via the <a href=":user-login">user login</a> page.',array(':permissions-url'=>$this->url('user.admin_permissions'),':user-login'=>$this->url('user.login'))),
'#description'=>t('Visitors will only see the maintenance mode message. Only users with the "@permission-label" <a href=":permissions-url">permission</a> will be able to access the site. Authorized users can log in directly via the <a href=":user-login">user login</a> page.',array('@permission-label'=>$permission_label,':permissions-url'=>$this->url('user.admin_permissions'),':user-login'=>$this->url('user.login'))),
$permission_label=$permissions['access site in maintenance mode']['title'];
$permission_message=t('Visitors will only see the maintenance mode message. Only users with the "@permission-label" <a href=":permissions-url">permission</a> will be able to access the site. Authorized users can log in directly via the <a href=":user-login">user login</a> page.',array('@permission-label'=>$permission_label,':permissions-url'=>\Drupal::url('user.admin_permissions'),':user-login'=>\Drupal::url('user.login')));