\Astrotomic\Translatable\Localesit's a singleton service available as
\Astrotomic\Translatable\Locales. This helper manages all locales available for translation and provides several methods.
ArrayAccessinterface to allow you to use it like a normal array.
translatable.localesconfig - it's called during service instantiation so you will only need it if you change the config during runtime.
nullif it's not set.
translatable.locale_separatorlocale separator used to combine language with country locales.