CurrentUser::isInGroup

public function isInGroup($groupId)
{
	if (empty($groupId))
		throw new MainArgumentNullException("groupId");
	if (!TypeInt::isInteger($groupId))
		throw new MainArgumentTypeException("groupId", "int");

	$groupId = intval($groupId);
	if ($groupId == 2)
		return true;

	if (!isset($this->userGroups))
		$this->loadUserGroups();

	return in_array($groupId, $this->userGroups);
}