toJSON method
Converts this MessageEnvelop to a JSON string. The message payload is passed as string Returns A JSON encoded representation is this object.
Implementation
Map<String, dynamic> toJSON() {
var payload = message != null ? message.toString() : null;
var json = {
'message_id': message_id,
'correlation_id': correlation_id,
'message_type': message_type,
'sent_time': StringConverter.toString2(sent_time ?? DateTime.now()),
'message': payload
};
return json;
}