javax.xml.bind.ContextFinder.find throwing NullPointerException when JAXWS EJB is trying to do JAXBContext.newInstance during deployment in JBoss EAP

Issue

Our JAXWS ear application is failing to deploy with the NullPointerException (NPE) shown below.
The example.ear/example-ws.jar has an ExampleWSEJB which when created creates a new ExampleObjectFactory which tries to load the package com.jboss.examples.services.data.generated package whose classes are contained in example.ear/lib/generated.jar. We are using JAXB directly in order to do validation against an xsd schema.

5071 Caused by: java.lang.NullPointerException 
5072   at javax.xml.bind.ContextFinder.find(ContextFinder.java:280)
5073   at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:412)
5074   at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:375)
5075   at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:279)
5076   at com.jboss.examples.services.util.ExampleObjectFactory.<init>(ExampleObjectFactory.java:123)
5077   at com.jboss.examples.services.ExampleWSEJB.<init>(ExampleWSEJB.java:12)
5078   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
5079   at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
5080   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
5081   at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
5082   at java.lang.Class.newInstance(Class.java:442)
5083   at org.jboss.wsf.stack.cxf.configuration.BusHolder.newInstance(BusHolder.java:321)
5084   ... 10 more