JBoss Native WS - problem with Abstract class as output Parameter in WebService

I've a problem to use abstract class in a Web Service like WebMethod output parameter.
I'm using JBOSS-5.1.0.GA and java runtime Version 6. It always return emtpry tag for abstract tag.

I have completed below step as well
When running under Java 6 you need to manually copy the following libraries from the JBOSS_HOME/client directory to the JBOSS_HOME/lib/endorsed directory, so that the JAX-WS 2.0 apis supported by JBossWS are used:

jbossws-native-saaj.jar
jbossws-native-jaxrpc.jar
jbossws-native-jaxws.jar
jbossws-native-jaxws-ext.jar

for below section of WSDL:

<xsd:complexType name="Personne" abstract="true" />
<xsd:complexType name="PersonnePhysique">
<xsd:complexContent>
<xsd:extension base="Personne">

Getting below error stack:

javax.xml.ws.WebServiceException: javax.xml.bind.UnmarshalException: Unable to create an instance of com.sfr.sigc.rechercherpersonneetroles.Personne

• with linked exception:
  [java.lang.InstantiationException]
  at org.jboss.ws.core.jaxws.JAXBDeserializer.handleUnmarshallException(JAXBDeserializer.java:110)
  at org.jboss.ws.core.jaxws.JAXBDeserializer.deserialize(JAXBDeserializer.java:78)
  at org.jboss.ws.core.binding.DeserializerSupport.deserialize(DeserializerSupport.java:58)
  at org.jboss.ws.core.soap.XMLContent.unmarshallObjectContents(XMLContent.java:179)
  at org.jboss.ws.core.soap.XMLContent.transitionTo(XMLContent.java:96)
  at org.jboss.ws.core.soap.SOAPContentElement.transitionTo(SOAPContentElement.java:140)
  at org.jboss.ws.core.soap.SOAPBodyElementDoc.transitionTo(SOAPBodyElementDoc.java:85)
  at org.jboss.ws.core.soap.SOAPContentElement.getObjectValue(SOAPContentElement.java:172)
  at org.jboss.ws.core.EndpointInvocation.transformPayloadValue(EndpointInvocation.java:261)
  at org.jboss.ws.core.EndpointInvocation.getReturnValue(EndpointInvocation.java:195)
  at org.jboss.ws.core.CommonClient.syncOutputParams(CommonClient.java:511)
  at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:397)
  at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:290)
  at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:170)
  at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:150)
  at $Proxy309.rechercherPersonneEtRoles(Unknown Source)