}
        trail = null;
    }

    /**
     * @return {@link List} < {@link String} > with artifact ids
     * @throws OverConstrainedVersionException if version specification is over constrained
     */
    public List<String> getDependencyTrail() throws OverConstrainedVersionException {
        List<Artifact> trial = getTrail();

        List<String> ret = new ArrayList<>(trial.size());

   *
   * @throws NoSuchFileException if the file does not exist <i>(optional specific exception)</i>
   * @throws NotDirectoryException if the file could not be opened because it is not a directory
   *     <i>(optional specific exception)</i>
   * @throws IOException if an I/O error occurs
   */
  public static ImmutableList<Path> listFiles(Path dir) throws IOException {

   *
   * @throws NoSuchFileException if the file does not exist <i>(optional specific exception)</i>
   * @throws NotDirectoryException if the file could not be opened because it is not a directory
   *     <i>(optional specific exception)</i>
   * @throws IOException if an I/O error occurs
   */
  public static ImmutableList<Path> listFiles(Path dir) throws IOException {

    public ArtifactRepositoryLayout getLayout(String layoutId) throws UnknownRepositoryLayoutException {
        return repositoryLayouts.get(layoutId);
    }

    public ArtifactRepository createDeploymentArtifactRepository(
            String id, String url, String layoutId, boolean uniqueVersion) throws UnknownRepositoryLayoutException {
        ArtifactRepositoryLayout layout = repositoryLayouts.get(layoutId);

            throws ArtifactResolutionException, PluginVersionResolutionException, ArtifactNotFoundException,
                    InvalidVersionSpecificationException, InvalidPluginException, PluginManagerException,
                    PluginNotFoundException, PluginVersionNotFoundException;

    Object getPluginComponent(Plugin plugin, String role, String roleHint)
            throws PluginManagerException, ComponentLookupException;

  }

  public void testCopyTo_appendable() throws IOException {
    StringBuilder builder = new StringBuilder();

    assertEquals(STRING.length(), source.copyTo(builder));
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());

    assertEquals(STRING, builder.toString());
  }

  public void testCopyTo_charSink() throws IOException {
    TestCharSink sink = new TestCharSink();

   *
   * @throws X if {@code get} throws any checked exception except for an {@code ExecutionException}
   *     whose cause is not itself a checked exception
   * @throws UncheckedExecutionException if {@code get} throws an {@code ExecutionException} with a
   *     {@code RuntimeException} as its cause
   * @throws ExecutionError if {@code get} throws an {@code ExecutionException} with an {@code

      };
    }

    @Override
    protected void run() throws Exception {}
  }

  public void testStopWhileStarting_runNotCalled() throws Exception {
    final CountDownLatch started = new CountDownLatch(1);
    FakeService service =
        new FakeService() {
          @Override
          protected void startUp() throws Exception {
            super.startUp();
            started.await();

    }

    public void initTreeProcessing(PlexusContainer plexus) throws ComponentLookupException {
        classpathTransformation = plexus.lookup(ClasspathTransformation.class);
        conflictResolver = plexus.lookup(GraphConflictResolver.class);
    }
    // ----------------------------------------------------------------------------
    public MetadataGraph getGraph() throws MetadataResolutionException {

            return (String) method.invoke(instance, message, possibleValues, defaultReply);
        } catch (Exception e) {
            throw new PrompterException("Unable to call prompter", e);
        }
    }

    @Override
    public String promptForPassword(String message) throws PrompterException {
        try {
            Class<?> clazz = container.getContainerRealm().loadClass(PROMPTER_CLASS);