InputSource inputSource = new InputSource();
                inputSource.setModelId(modelId);
                inputSource.setLocation(getClass().getResource(resource).toExternalForm());
                options.put(ModelProcessor.INPUT_SOURCE, inputSource);

                superModel = modelProcessor.read(is, options);
            } catch (IOException e) {

     *
     * @param url
     *            The resource URL. Must not be {@literal null}.
     * @return The external form.
     */
    public static String toExternalForm(final URL url) {
        assertArgumentNotNull("url", url);

        final String s = url.toExternalForm();
        return URLUtil.decode(s, "UTF8");
    }

    /**
     * Returns the file name of the resource.
     *
     * @param url

        }

        if (!UrlSource.class.equals(obj.getClass())) {
            return false;
        }

        UrlSource other = (UrlSource) obj;
        return Objects.equals(url.toExternalForm(), other.url.toExternalForm());
    }

        final File f = new File("/Program Files/foo.jar");
        URL url = new URL("jar:" + f.toURI().toURL() + "!/foo/bar/");
        url = new URL(url, "..");
        System.out.println(url.toExternalForm());
    }

        assertEquals("http://hoge.com/", value.toExternalForm());

        value = transformer.getBaseUrl("http://hoge.com/", "http://hoge.com/");
        assertEquals("http://hoge.com/", value.toExternalForm());

        value = transformer.getBaseUrl("http://hoge.com/aaa/bbb.html", "http://hoge.com/");
        assertEquals("http://hoge.com/", value.toExternalForm());

    @Test
    void testGetLocation() throws Exception {
        URL txtFile = new File("target/test-classes/source.txt").toURI().toURL();
        UrlSource source = new UrlSource(txtFile);
        assertEquals(txtFile.toExternalForm(), source.getLocation());
    }

     */
    public void testToExternalForm() throws Exception {
        final URL url = new File("/Program File").toURI().toURL();
        assertEquals("file:" + getRoot() + "Program File", ResourceUtil.toExternalForm(url));
    }

    /**
     * @throws Exception
     */
    public void testGetFileName() throws Exception {
        URL url = new File("/Program File").toURI().toURL();

        final URL url = ResourceUtil.getResource(toClassFile(referenceClass.getName()));
        final String[] path = referenceClass.getName().split("\\.");
        String baseUrl = url.toExternalForm();
        for (final String element : path) {
            final int pos = baseUrl.lastIndexOf('/');
            baseUrl = baseUrl.substring(0, pos);
        }

    @Override
    protected int getDefaultPort() {
        return DEFAULT_HTTP_PORT;
    }

    @Override
    protected URLConnection openConnection(URL url) throws IOException {
        url = new URL(url, url.toExternalForm(), getDefaultStreamHandler(url.getProtocol()));
        return new NtlmHttpURLConnection((HttpURLConnection) url.openConnection());
    }

    protected int getDefaultPort() {
        return DEFAULT_HTTP_PORT;
    }

    @Override
    protected URLConnection openConnection(URL url) throws IOException {
        url = new URL(url, url.toExternalForm(), getDefaultStreamHandler(url.getProtocol()));
        return new NtlmHttpURLConnection((HttpURLConnection) url.openConnection(), this.transportContext);
    }