- caption
Nullable!string caption;
Undocumented in source.
- chat_id
ChatId chat_id;
Undocumented in source.
- disable_notification
Nullable!bool disable_notification;
Undocumented in source.
- parse_mode
Nullable!ParseMode parse_mode;
Undocumented in source.
- photo
string photo;
Undocumented in source.
- reply_markup
Nullable!ReplyMarkup reply_markup;
Undocumented in source.
- reply_to_message_id
Nullable!uint reply_to_message_id;
Undocumented in source.