retractMessage method
消息撤回 target 聊天对象, JMSingle | JMGroup serverMessageId 消息服务器 id
Implementation
Future<void> retractMessage({
required dynamic target,
/// (JMSingle | JMGroup )
required String? serverMessageId,
}) async {
Map param = target.toJson();
param..addAll({'messageId': serverMessageId});
print("retractMessage: ${param.toString()}");
await _channel.invokeMethod(
'retractMessage', param..removeWhere((key, value) => value == null));
return;
}