toJson method
Convert to JSON.
Implementation
Map<String, dynamic> toJson() => {
'conversation': conversation.toJson(),
'type': type,
if (text != null) 'text': text,
if (blocks != null) 'blocks': blocks,
if (attachments != null)
'attachments': attachments!.map((a) => a.toJson()).toList(),
if (replyTo != null) 'replyTo': replyTo,
if (options != null) 'options': options,
};