toJson method

Implementation

@override
Map<String, dynamic> toJson() {
  return {
    '@type': 'openWebApp',
    if (extra != null) '@extra': extra,
    'chat_id': chat_id,
    'bot_user_id': bot_user_id,
    'url': url,
    'theme': theme,
    'application_name': application_name,
    'message_thread_id': message_thread_id,
    'reply_to': reply_to
  };
}