currencylistitems.php

См. документацию.

<?php
 
namespace Bitrix\Catalog\Filter\DataProvider\Currency;
 
use Bitrix\Currency\CurrencyManager;
use Bitrix\Main\Loader;
 
trait CurrencyListItems
{
    private function getCurrencyListItems(): array
    {
        if (Loader::includeModule('currency'))
        {
            return CurrencyManager::getNameList();
        }
 
        return [];
    }
}