Sending structure as a parameter of a signal about dbus-java HOT 3 CLOSED

import org.freedesktop.dbus.DBusInterface;
import org.freedesktop.dbus.DBusInterfaceName;
import org.freedesktop.dbus.DBusSignal;
import org.freedesktop.dbus.exceptions.DBusException;

@DBusInterfaceName("org.freedesktop.systemd1")
public interface DBus extends DBusInterface {
    public static final String DBUS = "org.freedesktop.systemd1";
    public static final String DBUS_PATH = "/org/freedesktop/systemd1";

    public class ownerDataSignal extends DBusSignal {
        private final OwnerInformationStruct ownerInformationStruct;

        public ownerDataSignal(OwnerInformationStruct ownerInformationStruct)
                throws DBusException {
            super(DBUS, DBUS_PATH, DBUS, "ownerDataSignal", "r", ownerInformationStruct);
            this.ownerInformationStruct = ownerInformationStruct;
        }
    }
}

import org.freedesktop.dbus.Position;
import org.freedesktop.dbus.Struct;
import org.freedesktop.dbus.UInt32;

public final class OwnerInformationStruct extends Struct {
    @Position(0)
    public final UInt32 error;
    @Position(1)
    public final String name;
    @Position(2)
    public final String address;

    public OwnerInformationStruct(UInt32 error, String name, String address) {
        this.error = error;
        this.name = name;
        this.address = address;
    }

}

OwnerInformationStruct ownerInformationStruct = new OwnerInformationStruct(new UInt32(1), "TEST", "TEST");
public void run() {
        DBusConnection conn;
        try {
            conn = DBusConnection.getConnection(DBusConnection.SYSTEM);
            conn.sendSignal(new DBus.ownerDataSignal(ownerInformationStruct));
        } catch (DBusException e) {
            e.printStackTrace();
        }

    }

org.freedesktop.dbus.exceptions.FatalDBusException: Underlying transport returned EOF