Service::logoutGroupAction

public function logoutGroupAction(string $type, string $groupId) : AjaxJson
{
	if (!$service = $this->getService())
	{
		$this->addError(
			new Error("Service is not available.")
		);

		return $this->errorResponse();
	}

	if (!$service::unRegisterGroup($type,$groupId))
	{
		$this->addError(
			new Error("Can't unregister group")
		);

		return $this->errorResponse();
	}

	return $this->successResponse();
}