The issue is covered by org.jboss.test.ws.encoded.parametermode.ParameterModeTestCase#testEchoInStruct on branch 'jbossws-1.0':

Caused by: org.jboss.xb.binding.JBossXBRuntimeException: Failed to find read method or field for property 'href' in class java.lang.Byte
at org.jboss.xb.binding.introspection.ClassInfo.getFieldInfo(ClassInfo.java:81)
at org.jboss.xb.binding.introspection.FieldInfo.getFieldInfo(FieldInfo.java:125)
at org.jboss.xb.binding.sunday.marshalling.DefaultAttributeMarshaller.getValue(DefaultAttributeMarshaller.java:67)
at org.jboss.xb.binding.sunday.marshalling.AbstractAttributeMarshaller.marshal(AbstractAttributeMarshaller.java:38)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalComplexType(MarshallerImpl.java:539)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalElementType(MarshallerImpl.java:422)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalElement(MarshallerImpl.java:334)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalElementOccurence(MarshallerImpl.java:314)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalParticle(MarshallerImpl.java:733)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalModelGroupAll(MarshallerImpl.java:874)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalModelGroup(MarshallerImpl.java:855)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalParticle(MarshallerImpl.java:644)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalComplexType(MarshallerImpl.java:611)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalElementType(MarshallerImpl.java:422)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalElement(MarshallerImpl.java:334)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshalElementOccurence(MarshallerImpl.java:314)
at org.jboss.xb.binding.sunday.marshalling.MarshallerImpl.marshallInternal(MarshallerImpl.java:213)