nonNull(request, "request");
        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 {

import java.net.URLClassLoader;

// TODO(b/65488446): Make this a public API.
/** Utility method to parse the system class path. */
final class ClassPathUtil {
  private ClassPathUtil() {}

  /**
   * Returns the URLs in the class path specified by the {@code java.class.path} {@linkplain
   * System#getProperty system property}.
   */
  // TODO(b/65488446): Make this a public API.
  static URL[] parseJavaClassPath() {

        @Override
        public Model getRawModel(Path from, String groupId, String artifactId) throws IllegalStateException {
            throw new UnsupportedOperationException();
        }

        @Override
        public Model getRawModel(Path from, Path p) {
            throw new UnsupportedOperationException();
        }

        @Override
        public Path locate(Path path) {

    /**
     * Returns the path of the file previously associated to this artifact
     * or {@code Optional.empty()} if no path has been associated.
     */
    @Nonnull
    Optional<Path> getPath(@Nonnull Artifact artifact);

    /**
     * Associates the given file path to the artifact.
     */
    void setPath(@Nonnull Artifact artifact, Path path);

        }
    }

    /**
     * デフォルトエンコーディングでファイルからテキストを読み込みます。
     *
     * @param path
     *            ファイルのパス。{@literal null}や空文字列であってはいけません
     * @return 読み込んだテキスト
     */
    public static String readText(final String path) {
        assertArgumentNotEmpty("path", path);
        return readText(path, Charset.defaultCharset().name());
    }

    /**
     * デフォルトエンコーディングでファイルからテキストを読み込みます。
     *

        try {
            Path artifactPath = getProjectLocalRepo()
                    .resolve(project.getGroupId())
                    .resolve(project.getArtifactId())
                    .resolve(project.getVersion());
            if (Files.isDirectory(artifactPath)) {
                try (Stream<Path> paths = Files.list(artifactPath)) {
                    for (Path path : (Iterable<Path>) paths::iterator) {

    PluginsMetadata(PluginInfo pluginInfo, Date timestamp) {
        super(createRepositoryMetadata(pluginInfo), (Path) null, timestamp);
        this.pluginInfo = pluginInfo;
    }

    PluginsMetadata(PluginInfo pluginInfo, Path path, Date timestamp) {
        super(createRepositoryMetadata(pluginInfo), path, timestamp);
        this.pluginInfo = pluginInfo;
    }

    VersionsMetadata(Artifact artifact, Date timestamp) {
        super(createRepositoryMetadata(artifact), (Path) null, timestamp);
        this.artifact = artifact;
    }

    VersionsMetadata(Artifact artifact, Path path, Date timestamp) {
        super(createRepositoryMetadata(artifact), path, timestamp);
        this.artifact = artifact;
    }

    private static Metadata createRepositoryMetadata(Artifact artifact) {

        String path = link != null ? link : dfsSharePath + relative;

        if ( upper ) {
            dfsShare = dfsShare.toUpperCase(Locale.ROOT);
            path = path.toUpperCase(Locale.ROOT);
            target = target.toUpperCase(Locale.ROOT);
        }

        log.debug("Resolving \\" + target + "\\" + dfsShare + path);

  JAVA_CLASS_VERSION("java.class.version"),

  /** Java class path. */
  JAVA_CLASS_PATH("java.class.path"),

  /** List of paths to search when loading libraries. */
  JAVA_LIBRARY_PATH("java.library.path"),

  /** Default temp file path. */
  JAVA_IO_TMPDIR("java.io.tmpdir"),

  /** Name of JIT compiler to use. */
  JAVA_COMPILER("java.compiler"),

  /**
   * Path of extension directory or directories.
   *