How to use find language routing to custom find index models?

Hi Team,

We are working on epi find upgrade v-13. The new language routing is added to the find entry if the content implements ILocale.

But we are not using a variation or page data instead of using a customized index model. We are using the below method for build ,

protected override int IndexCatalogEntryDto(IndexBuilder indexer, CatalogEntryDto.CatalogEntryRow entryRow, string defaultCurrency, string[] languages)
        {
. 
.
}

how can I implement the language routing for our customized find model? Is it possible to implement?

Advance Thanks,