toJson method
Implementation
Map toJson() => {
"iso_639_1_alpha2": iso_639_1_alpha2,
"iso_639_2_alpha3": iso_639_2_alpha3,
"family": family,
"name": name,
"native": native,
"name_in": name_in!.map((key, value) => MapEntry(key.iso_639_2_alpha3, value)),
"wikiUrl": wikiUrl
};