class WordWithTranslation {
  final String word;
  final String translation;
  final String? lang;

  WordWithTranslation({
    required this.word,
    required this.translation,
    this.lang,
  });

  factory WordWithTranslation.fromJson(Map<String, dynamic> json) {
    return WordWithTranslation(
      word: json['word'] as String,
      translation: json['translation'] as String,
      lang: json['lang'] as String?,
    );
  }

  Map<String, dynamic> toJson() => {
        'word': word,
        'translation': translation,
        if (lang != null) 'lang': lang,
      };
}