Objects.requireNonNull(request, "request");
        Reader reader = request.getReader();
        InputStream inputStream = request.getInputStream();
        if (reader == null && inputStream == null) {
            throw new IllegalArgumentException("reader or inputStream must be non null");
        }
        try {
            InputSource source = null;

        Objects.requireNonNull(request, "request");
        Reader reader = request.getReader();
        InputStream inputStream = request.getInputStream();
        if (reader == null && inputStream == null) {
            throw new IllegalArgumentException("reader or inputStream must be non null");
        }
        try {
            InputSource source = null;

        Path path = request.getPath();
        URL url = request.getURL();
        Reader reader = request.getReader();
        InputStream inputStream = request.getInputStream();
        if (path == null && url == null && reader == null && inputStream == null) {
            throw new IllegalArgumentException("path, url, reader or inputStream must be non null");
        }
        try {
            InputSource source = null;

        Path path = request.getPath();
        URL url = request.getURL();
        Reader reader = request.getReader();
        InputStream inputStream = request.getInputStream();
        if (path == null && url == null && reader == null && inputStream == null) {
            throw new IllegalArgumentException("path, url, reader or inputStream must be non null");
        }
        try {
            InputSource source = null;

    /**
     * Gets the class loader from which to load any types referenced by the configuration. If unset, the class loader of
     * the bean class will be used.
     *
     * @return The class loader to load referenced types from or {@code null} if unset.
     */
    ClassLoader getClassLoader();

    /**

    Metadata read(File input, Map<String, ?> options) throws IOException, MetadataParseException;

    /**
     * Reads the metadata from the specified character reader. The reader will be automatically closed before the method
     * returns.
     *
     * @param input The reader to deserialize the metadata from, must not be {@code null}.
     * @param options The options to use for deserialization, may be {@code null} to use the default values.

    public static CoreExtensionEntry discoverFrom(ClassRealm loader) {
        Set<String> artifacts = new LinkedHashSet<>();
        Set<String> packages = new LinkedHashSet<>();

        try {
            Enumeration<URL> urls = loader.getResources(BUILDER.getExtensionDescriptorLocation());
            while (urls.hasMoreElements()) {

Stream, int) throws java.io.IOException; public static void copy(java.io.Reader, java.io.OutputStream) throws java.io.IOException; public static void copy(java.io.Reader, java.io.OutputStream, int) throws java.io.IOException; public static String toString(java.io.Reader) throws java.io.IOException; public static String toString(java.io.Reader, int) throws java.io.IOException; public static byte[] toByteArray(java.io.Reader) throws java.io.IOException; public static byte[] toByteArray(java.io.Reader,...

Stream, int) throws java.io.IOException; public static void copy(java.io.Reader, java.io.OutputStream) throws java.io.IOException; public static void copy(java.io.Reader, java.io.OutputStream, int) throws java.io.IOException; public static String toString(java.io.Reader) throws java.io.IOException; public static String toString(java.io.Reader, int) throws java.io.IOException; public static byte[] toByteArray(java.io.Reader) throws java.io.IOException; public static byte[] toByteArray(java.io.Reader,...

    Extension descriptor, stored in <code>META-INF/maven/extension.xml</code> in an extension's jar artifact to
    precisely control parts of the extension and dependencies to expose in the API class loader.
    Maven uses Plexus Classworlds to build the class loader hierarchy, therefore some concepts used in this extensions
    stem from Plexus Classworlds originally.