public static function hasPurchasedUsers()
{
if (self::$hasPurchasedUsers !== null) {
return self::$hasPurchasedUsers;
}
if (!(ModuleManager::isModuleInstalled('bitrix24') && Loader::includeModule('bitrix24')) && method_exists('CBitrix24', 'IsExtraUsers')) {
return self::$hasPurchasedUsers = false;
}
return self::$hasPurchasedUsers = \CBitrix24::IsExtraUsers();
}