CarrotChat v2.8.60.240131版本的 MD5 值为：2baf8b9f31830b86b5c5a85ae6b47e05

以下内容为反编译后的 j5.java 源代码，内容仅作参考

package ak.smack;

import org.jivesoftware.smack.packet.ExtensionElement;
import org.jivesoftware.smackx.receipts.DeliveryReceiptRequest;
public class j5 implements ExtensionElement {
    String a = null;

    @Override
    public String getElementName() {
        return DeliveryReceiptRequest.ELEMENT;
    }

    public String getId() {
        return this.a;
    }

    @Override
    public String getNamespace() {
        return "http://akey.im/protocol/xmpp/extend/server-receipts";
    }

    public void setId(String str) {
        this.a = str;
    }

    @Override
    public String toXML() {
        return "<received xmlns='http://akey.im/protocol/xmpp/extend/server-receipts' id='" + this.a + "'/>";
    }
}