assertEquals("configuration", node.name());
        assertEquals(1, node.children().size());
        XmlNode myConfig = node.children().get(0);
        assertEquals("http://fabric8.io/fabric8-maven-plugin", myConfig.namespaceUri());
        assertEquals("", myConfig.prefix());
        assertEquals("myConfig", myConfig.name());
        String config = node.toString();

 *
 * A good way to signal a failure is with a synthetic HTTP response:
 *
 * ```kotlin
 *   @Throws(IOException::class)
 *   override fun intercept(chain: Interceptor.Chain): Response {
 *     if (myConfig.isInvalid()) {
 *       return Response.Builder()
 *           .request(chain.request())
 *           .protocol(Protocol.HTTP_1_1)
 *           .code(400)
 *           .message("client config invalid")