RequestFactory polymorphism

public class Foo{ ... public List<? extends Base> getList(){...} ...}

public class Base {...}

public class A extends Base{...}

public class B extends Base{...}

@ProxyFor( value=Foo.class, locator...) public interface FooProxy extends EntityProxy{ public List<? extends BaseProxy> getList(); public void setList(List<? extends BaseProxy> list);}

@ProxyFor( value=Base.class, locator...) public interface BaseProxy extends EntityProxy{...}

@ProxyFor( value=A.class, locator...) public interface AProxy extends BaseProxy{...}

@ProxyFor( value=B.class, locator...) public interface BProxy extends BaseProxy{...}

@Service(value=FooService.class)

@ExtraTypes( value = {AProxy.class, BProxy.class})

public interface FooRequestService extends RequestContext{ public Foo findById(String id);}

....

service.findById("myid").with("list").fire(new Receiver<AProxy>(){ // throws exception

  @Override public void onSuccess(AProxy response){

    ...

  }

});

Using GWT 2.4 I get the following stactrace:

java.lang.NullPointerException

        at com.google.web.bindery.autobean.vm.impl.MethodPropertyContext.traverse(MethodPropertyContext.java:102)

at com.google.web.bindery.autobean.vm.impl.MethodPropertyContext.traverse(MethodPropertyContext.java:104)

at com.google.web.bindery.autobean.vm.impl.MethodPropertyContext.accept(MethodPropertyContext.java:75)

at com.google.web.bindery.autobean.shared.impl.AutoBeanCodexImpl$PropertyCoderCreator.maybeCreateCoder(AutoBeanCodexImpl.java:353)

at com.google.web.bindery.autobean.shared.impl.AutoBeanCodexImpl$PropertyCoderCreator.visitReferenceProperty(AutoBeanCodexImpl.java:341)

at com.google.web.bindery.autobean.shared.AutoBeanVisitor.visitCollectionProperty(AutoBeanVisitor.java:229)

at com.google.web.bindery.autobean.vm.impl.ProxyAutoBean.traverseProperties(ProxyAutoBean.java:300)

at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.traverse(AbstractAutoBean.java:166)

at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.accept(AbstractAutoBean.java:101)

at com.google.web.bindery.autobean.shared.impl.AutoBeanCodexImpl.doCoderFor(AutoBeanCodexImpl.java:521)

at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.setProperty(AbstractAutoBean.java:276)

at com.google.web.bindery.autobean.vm.impl.ProxyAutoBean.setProperty(ProxyAutoBean.java:253)

at com.google.web.bindery.autobean.vm.impl.BeanPropertyContext.set(BeanPropertyContext.java:44)

at com.google.web.bindery.requestfactory.server.Resolver$PropertyResolver.visitReferenceProperty(Resolver.java:141)

at com.google.web.bindery.autobean.shared.AutoBeanVisitor.visitCollectionProperty(AutoBeanVisitor.java:229)

at com.google.web.bindery.autobean.vm.impl.ProxyAutoBean.traverseProperties(ProxyAutoBean.java:300)

at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.traverse(AbstractAutoBean.java:166)

at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.accept(AbstractAutoBean.java:101)

at com.google.web.bindery.requestfactory.server.Resolver.resolveClientValue(Resolver.java:395)

at com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.processInvocationMessages(SimpleRequestProcessor.java:483)

at com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:225)

at com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:127)

at com.google.web.bindery.requestfactory.server.testing.InProcessRequestTransport.send(InProcessRequestTransport.java:55)

at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext.doFire(AbstractRequestContext.java:1102)

at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext.fire(AbstractRequestContext.java:569)

at com.google.web.bindery.requestfactory.shared.impl.AbstractRequest.fire(AbstractRequest.java:54)

at com.google.web.bindery.requestfactory.shared.impl.AbstractRequest.fire(AbstractRequest.java:59)

Am I missing somthing or is this not supported?

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