adapted https://svn.apache.org/repos/asf/camel/trunk/components/camel-jaxb/src/test/java/org/apache/camel/converter/jaxb/JaxbDataFormatMultipleNamespacesTest.java to our jaxb proxies
genuinely valid unit test for xacml input
nicked a few potentially useful XacmlFunction interfaces in order to stub in a method of searching the codebase for an infamous xacml uri.