@Override
            public void handle(IAsyncResult<IPolicy> result) {
                Assert.assertNotNull("Should return a valid async result", result);
                Assert.assertTrue(result.isError());
                Assert.assertNotNull("Should return an exception", result.getError());
                Assert.assertEquals(PolicyNotFoundException.class.getName(), result.getError().getClass().getName());
            }
Test {@link IPolicyFactory} functionality, in particular ensuring classes are
discovered, loaded, instantiated and configured as expected.

@author Marc Savy <msavy@redhat.com>
gateway/engine/core/src/test/java/io/apiman/gateway/engine/impl/PolicyLoadTest.java