copy method

MqttData copy({
  1. MqttMessageType? messageType,
  2. String? data,
})

复制一个对象

Implementation

MqttData copy({MqttMessageType? messageType, String? data}) {
  return MqttData(
      topic: topic,
      receive: receive,
      sender: sender,
      createdTime: createdTime,
      timeout: timeout,
      messageNumber: messageNumber,
      secretKey: secretKey,
      messageType: messageType ?? this.messageType,
      dataLength: dataLength,
      data: data ?? this.data,
      checkCode: checkCode);
}