RtcAigcMessage.system constructor
用于创建系统消息的工厂方法
Implementation
factory RtcAigcMessage.system({
required String id,
required String text,
int? timestamp,
}) {
return RtcAigcMessage(
id: id,
type: MessageType.system,
text: text,
senderId: null,
isUser: false,
timestamp: timestamp ?? DateTime.now().millisecondsSinceEpoch,
isInterrupted: false,
isFinal: false,
);
}