@Override
    public synchronized File getFile() {
        try {
            String state = mayUpdate();
            if (state == null) {
                return null;
            }
            return target.toFile();
        } catch (IOException | NoSuchAlgorithmException | XMLStreamException | ModelBuildingException e) {
            throw new TransformationFailedException(e);
        }
    }

    private String mayUpdate()

        return getPluginJarFiles((file, name) -> name.startsWith(namePrefix));
    }

    public static File[] getPluginJarFiles(final FilenameFilter filter) {
        final File libDir = getPluginPath().toFile();
        if (!libDir.exists()) {
            return new File[0];
        }
        return libDir.listFiles(filter);
    }

    public static String resolve(final String value) {

                && artifact.getPath() != null) {
            Path artifactPath = artifact.getPath();
            if (Files.isRegularFile(artifactPath)) {
                try (JarFile artifactJar = new JarFile(artifactPath.toFile(), false)) {
                    ZipEntry pluginDescriptorEntry = artifactJar.getEntry(PLUGIN_DESCRIPTOR_LOCATION);

                    if (pluginDescriptorEntry != null) {

            if (varPath != null) {
                baseDir = new File(varPath, THUMBNAILS_DIR_NAME);
            } else {
                baseDir = ResourceUtil.getThumbnailPath().toFile();
            }
        }
        if (baseDir.mkdirs()) {
            logger.info("Created: {}", baseDir.getAbsolutePath());
        }
        if (!baseDir.isDirectory()) {

                    Path base = basedir != null ? basedir.toPath() : null;
                    Path root = rootLocator.findMandatoryRoot(base);
                    return root.toFile().getAbsolutePath();
                }
                return null;
            }
        });

        interpolator.addValueSource(new MapBasedValueSource(context.getProjectProperties()));

     *
     * @return The underlying file, never {@code null}.
     * @deprecated Use {@link #getPath()} instead.
     */
    @Deprecated
    public File getFile() {
        return path.toFile();
    }

    /**
     * Gets the file of this source.
     *
     * @return The underlying file, never {@code null}.
     * @since 4.0.0
     */
    public Path getPath() {
        return path;
    }

        0 * action._
    }

    def canPersistMetaData() {
        TestDomainObject value = new TestDomainObject('a')
        File file = Files.createTempFile(tmpDir.toPath(), null, null).toFile()
        repository.put('class', value)

        when:
        repository.store(file)
        def newRepo = new SimpleClassMetaDataRepository<TestDomainObject>()
        newRepo.load(file)

        then:

                }

                final Path path = env.configFile().resolve(filePath);

                try {
                    final File file = path.toFile();
                    if (file.exists()) {
                        reloadableFile = file;
                    }

    }

    private boolean isPackagedArtifactUpToDate(MavenProject project, File packagedArtifactFile) {
        Path outputDirectory = Paths.get(project.getBuild().getOutputDirectory());
        if (!outputDirectory.toFile().exists()) {
            return true;
        }

        try (Stream<Path> outputFiles = Files.walk(outputDirectory)) {

/**
 * @author wyukawa
 *
 */
public class PropertiesUtilTest {

    URL url = ResourceUtil.getResource(getClass().getName().replace('.', '/') + ".txt");

    File inputFile = URLUtil.toFile(url);

    /**
     *
     */
    @Rule
    public TemporaryFolder tempFolder = new TemporaryFolder();

    /**
     * @see org.junit.rules.ExpectedException
     */
    @Rule