Bitrix24Manager::hasPurchasedUsers

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());
}