HotswapSpringCallback not serializable

[bmehner]

I have a problem using HotswapAgent in combination with Wicket and Spring.
My application has Wicket-Pages which get Spring-Beans injected via the Spring integration mechanism of Wicket:

    public class SomePage extends GenericWebPage {
        @SpringBean
        private Service someService;

        public SomePage() {
          super();
        }
    }

When I activate HotswapAgent I get NotSerializableExceptions (details see below). Wicket needs to serialize the pages to its internal page store. Apparently the injected Spring service causes the trouble.

2018-03-26 09:30:37.965 WARN [http-listener-1(2)] o.a.w.c.u.o.c.CheckingObjectOutputStream - error delegating to writeObject : HotswapSpringCallback_1796692748, path: /children/[7]/children/[1]/children/[0]/children/[4]/children/children/children/[0]/val$choice/provider/val$classes
2018-03-26 09:30:37.969 ERROR [http-listener-1(2)] o.a.w.serialize.java.JavaSerializer - Error serializing object class com.ccc.yap.presentation.frontend.ui.core.TicketErrorPage [object=[Page class = com.ccc.yap.presentation.frontend.ui.core.TicketErrorPage, id = 20, render count = 1]]
java.io.NotSerializableException: HotswapSpringCallback_1796692748
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at java.util.ArrayList.writeObject(ArrayList.java:766)
    at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1128)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)

Please make HotswapSpringCallback serializable! Thanks in advance.

[edudant]

org.hotswap.agent.plugin.spring.getbean.DetachableBeanHolder now implements Serializable (HotswapSpringCallback is a subclass).