fetchSupportedLanguages method Null safety

Future<List<ChatTranslateLanguage>> fetchSupportedLanguages()

Fetch all languages what the translate service support

Return Supported languages

Throws A description of the exception. See ChatError.

Implementation

Future<List<ChatTranslateLanguage>> fetchSupportedLanguages() async {
  Map result =
      await ChatChannel.invokeMethod(ChatMethodKeys.fetchSupportLanguages);
  try {
    ChatError.hasErrorFromResult(result);
    List<ChatTranslateLanguage> list = [];
    result[ChatMethodKeys.fetchSupportLanguages]?.forEach((element) {
      list.add(ChatTranslateLanguage.fromJson(element));
    });
    return list;
  } on ChatError catch (e) {
    throw e;
  }
}