filtercontrollerresolver.php

<?php
namespace Bitrix\UI\EntitySelector;
 
class FilterControllerResolver
{
    public static function getModuleId(string $filterId): string
    {
        $isThirdPartyModule = mb_strpos($filterId, ':') !== false;
        if ($isThirdPartyModule)
        {
            $path = explode(
                '.',
                str_replace(':', '.', $filterId)
            );
 
            return $path[0] . '.' . $path[1];
        }
 
        return explode('.', $filterId)[0];
    }
}