}

    @Input
    public Map<String, File> getTestClassNames() {
        if (testClassNames == null) {
            testClassNames = Util.getJavaTestSourceSet(getProject())
                .get()
                .getOutput()
                .getClassesDirs()
                .getFiles()
                .stream()
                .filter(File::exists)

                    throw e;
                }

                logger.debug("  Artifact " + artifact.getId() + " resolved to " + artifact.getFile());

                artifact.setResolved(true);
            } else if (!artifact.getFile().exists()) {
                String error = updateCheckManager.getError(artifact, repository);
                if (error != null) {

            } else {
                File file = artifact.getFile();
                log.debug("  Included {} located at {}", id, file);
                realm.addURL(file.toURI().toURL());
            }
        }
        return CoreExtensionEntry.discoverFrom(
                realm,
                Collections.singleton(artifacts.get(0).getFile()),
                extension.getGroupId() + ":" + extension.getArtifactId(),

 * 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);
    }

      return buf;
    }

    int getCount() {
      return count;
    }
  }

  /** Returns the file holding the data (possibly null). */
  @VisibleForTesting
  @Nullable File getFile() {
    return state.getFile();
  }

  /**
   * Creates a new instance that uses the given file threshold, and does not reset the data when the
   * {@link ByteSource} returned by {@link #asByteSource} is garbage collected.
   *

     * comment: Whether to get file roles from a file.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getFileRoleFromFile();

    /**
     * Is the property for the key 'file.role.from.file' true? <br>
     * The value is, e.g. true <br>
     * comment: Whether to get file roles from a file.

    }

    /**
     * Gets the file of this source.
     *
     * @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() {

        String resourceName,
        @Nullable File file) {
    TransferResourceIdentifier(TransferResource resource) {
        this(resource.getRepositoryId(), resource.getRepositoryUrl(), resource.getResourceName(), resource.getFile());
    }

            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();

        this(artifact, null);
    }

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

    public File getFile() {
        return file;
    }

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

    @Override
    public String getLocalFilename(ArtifactRepository repository) {