DepartmentProvider::getAllowOnlyUserDepartment

private function getAllowOnlyUserDepartment(): ?array
{
	$result = null;
	if ($this->options['allowOnlyUserDepartments'] === true)
	{
		$result = [];
		global $USER;
		if ($USER->isAuthorized())
		{
			$res = CUser::getById($USER->getId());
			if (($user = $res->fetch()) && !empty($user['UF_DEPARTMENT']))
			{
				$result = $user['UF_DEPARTMENT'];
			}
		}
	}

	return $result;
}