languageCode

CLDR[https://cldr.unicode.org/] code for this language. The format is a string that uses a two letter language code (e.g. "en" for English) optionally followed by a two letter country code (e.g. "en-US" for US English). To see the latest list of languages supported by the Basemap Styles Service, and the code associated with each language, see the Languages section[https://developers.arcgis.com/rest/basemap-styles/#languages] of the Basemap Styles Service documentation.