How to internationnalize (i18n) a Genie app?

I’ve looked for an internnationnalization (i18n) functionality in Julia to use it with a small Genie web app and only found this [base/I18n module ] (julia/i18n.jl at 96b28d64bdd3ae037378028d4cd60e5a4c397256 · JuliaLang/julia · GitHub) but it isn’t cleat to me how to use that?

Could someone point me to other solutions or explanations ?
Best to all.