// TODO: This could probably use InputChanges API
        File destinationDirectory = getDestinationDirectory().get().getAsFile();
        getFs().delete(spec -> spec.delete(destinationDirectory));
        destinationDirectory.mkdirs();

        Path adocDir = getDocumentationRoot().get().getAsFile().toPath();
        getDocumentationFiles().getAsFileTree().matching(pattern -> pattern.include("**/*.adoc")).forEach(adocFile -> {

        ClassMetaDataUtil.extractFromMetadata(getMetaDataFile().getAsFile().get(), getExcludedPackages().get(), classMetaData -> simpleNames.put(classMetaData.getSimpleName(), classMetaData.getClassName()));
        try (PrintWriter mappingFileWriter = new PrintWriter(new FileWriter(getMappingDestFile().getAsFile().get()))) {
            for (Map.Entry<String, Collection<String>> entry : simpleNames.asMap().entrySet()) {

        this(artifact, null);
    }

    public ProjectArtifactMetadata(Artifact artifact, File file) {
        super(artifact);
        this.file = file;
    }

    public File getFile() {
        return file;
    }

    public String getRemoteFilename() {
        return getFilename();
    }

    public String getLocalFilename(ArtifactRepository repository) {
        return getFilename();

     */
    String getVersion();

    /**
     * Gets the file of the constituent's artifact.
     *
     * @return The file, never {@code null}.
     */
    File getFile();

    byte[] data = newPreFilledByteArray(100);
    FileBackedOutputStream out = new FileBackedOutputStream(0, true);

    write(out, data, 0, 100, true);
    final File file = out.getFile();
    assertEquals(100, file.length());
    assertTrue(file.exists());
    out.close();

    // Make sure that finalize deletes the file
    out = null;

    // times out and throws RuntimeException on failure

            return project.getFile();
        }

        // Get the matching artifact from the project
        Artifact projectArtifact = findMatchingArtifact(project, artifact);
        if (projectArtifact != null) {
            // If the artifact has been associated to a file, use it
            File packagedArtifactFile = projectArtifact.getFile();

        File file = new File(getRepository().getBasedir(), path);

        LocalArtifactResult result = new LocalArtifactResult(request);
        if (file.isFile()) {
            result.setFile(file);
            result.setAvailable(true);
        }

        return result;
    }

    public void add(RepositorySystemSession session, LocalArtifactRegistration request) {
        // noop
    }

        assertArgumentNotNull("url", url);

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

    /**
     * リソースのファイルを返します。
     *
     * @param url
     *            リソースのURL。{@literal null}であってはいけません
     * @return ファイル
     */
    public static File getFile(final URL url) {
        assertArgumentNotNull("url", url);

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.transformation;

/**
 * Exception that may be thrown by the {@link org.apache.maven.artifact.Artifact#getFile()}
 * implementation.
 */
public class TransformationFailedException extends RuntimeException {

    public TransformationFailedException(Throwable cause) {
        super(cause);
    }

    }

    @Test
    void testGetFile() {
        File txtFile = new File("target/test-classes/source.txt");
        FileSource source = new FileSource(txtFile);
        assertEquals(txtFile.getAbsoluteFile(), source.getFile());
    }