The supported ISO 639 language codes for PickerBuilder.setLocale.
Signature
type Locales = 'af'|'am'|'ar'|'bg'|'bn'|'ca'|'cs'|'da'|'de'|'el'|'en'|
'en-GB'|'es'|'es-419'|'et'|'eu'|'fa'|'fi'|'fil'|'fr'|'fr-CA'|'gl'|'gu'|'hi'|
'hr'|'hu'|'id'|'is'|'it'|'iw'|'ja'|'kn'|'ko'|'lt'|'lv'|'ml'|'mr'|'ms'|'nl'|
'no'|'pl'|'pt-BR'|'pt-PT'|'ro'|'ru'|'sk'|'sl'|'sr'|'sv'|'sw'|'ta'|'te'|'th'|
'tr'|'uk'|'ur'|'vi'|'zh-CN'|'zh-HK'|'zh-TW'|'zu';