@Override
    public Iterator<String> getPrefixes(String namespaceURI) {
        throw new UnsupportedOperationException("Operation not supported");
    }
@Test
    public void testGetPrefixes() {
        try {
            camelSpringNamespace.getPrefixes(Constants.XML_SCHEMA_NAMESPACE_URI);
            fail("UnsupportedOperationException expected");
        } catch (UnsupportedOperationException e) {
            // Expected.
        }
    }