toJson method
Implementation
@override
Map<String, dynamic> toJson([dynamic extra]) {
return {
"@type": CONSTRUCTOR,
"chat_id": chatId,
"message_id": messageId,
"reply_markup": replyMarkup?.toJson(),
"location": location?.toJson(),
"heading": heading,
"proximity_alert_radius": proximityAlertRadius,
"@extra": extra,
};
}