public static URL getResource(String resourceName) {
    ClassLoader loader =
        MoreObjects.firstNonNull(
            Thread.currentThread().getContextClassLoader(), Resources.class.getClassLoader());
    URL url = loader.getResource(resourceName);
    checkArgument(url != null, "resource %s not found.", resourceName);
    return url;
  }

  /**

                // drop through...
            }
        }

        // assume custom type is in same class space as default
        final ClassLoader peer = defaultClazz.getClassLoader();
        if (peer != null) {
            try {
                return peer.loadClass(name);
            } catch (final Exception e) {
                // drop through...

     * flexibility to load multiple version of maven into dedicated classloaders without assuming state of jvm system
     * classloader.
     */
    private static final ClassLoader PARENT_CLASSLOADER = ClassWorld.class.getClassLoader();

    private final Logger logger = LoggerFactory.getLogger(getClass());

    private final ClassWorld world;

    private final ClassRealm containerRealm;

    // this is a live injected collection

     * @return true if the class is available, false otherwise
     */
    private static boolean isClassAvailable(final String className) {
        try {
            Class.forName(className, false, Logger.class.getClassLoader());
            return true;
        } catch (final ClassNotFoundException e) {
            return false;
        }
    }

    /**
     * Constructs an instance.
     *
     * @param clazz

            return "Expected at least one " + message + ", but found none.";
        }
    }

    private boolean seemsLikeATest(Class<?> clazz) {
        try {
            ClassLoader classLoader = clazz.getClassLoader();

            Class<?> junitTest = loadClassWithoutInitializing("org.junit.Assert", classLoader);
            if (junitTest.isAssignableFrom(clazz)) {