* File Specification</a>. If {@code manifest} is null, it means the jar file has no manifest, and
   * an empty set will be returned.
   */
  @VisibleForTesting
  static ImmutableSet<File> getClassPathFromManifest(
      File jarFile, @CheckForNull Manifest manifest) {
    if (manifest == null) {
      return ImmutableSet.of();
    }

    private String repositoryUrl;

    private Resource resource;

    private long transferStartTime;

    MavenArtifact(String repositoryUrl, Resource resource) {
        if (repositoryUrl == null) {
            this.repositoryUrl = "";
        } else if (!repositoryUrl.endsWith("/") && !repositoryUrl.isEmpty()) {
            this.repositoryUrl = repositoryUrl + '/';
        } else {

                try {
                    Thread.sleep(10000);
                } catch (InterruptedException e) {
                    throw new CrawlingAccessException(e);
                }
                return null;
            }
        };
        client.setAccessTimeout(1);
        try {
            client.doGet("smb://localhost/test.txt");
            fail();
        } catch (CrawlingAccessException e) {

        .createTestSuite();
  }

  // TODO: consider being null-hostile in these tests

  private static Test testsForHashMapNullKeysForbidden() {
    return wrappedHashMapTests(
        new WrappedHashMapGenerator() {
          @Override
          Map<String, String> wrap(final HashMap<String, String> map) {
            if (map.containsKey(null)) {
              throw new NullPointerException();
            }

    }

    public String getReading() {
        return reading;
    }

    public String getPos() {
        return pos;
    }

    public boolean isUpdated() {
        return newToken != null;
    }

    public boolean isDeleted() {
        return isUpdated() && newToken.length() == 0;
    }

    @Override
    public int hashCode() {

    boolean ran = false;
    @Nullable Callback callback = null;

    public SimpleTearDown() {}

    public SimpleTearDown(Callback callback) {
      this.callback = callback;
    }

    @Override
    public void tearDown() throws Exception {
      if (callback != null) {
        callback.run();
      }
      ran = true;
    }
  }

     * @return file representing the tool executable, or null if the tool cannot be found
     */
    String findTool(String toolName);

    /**
     * Let the toolchain decide if it matches requirements defined
     * in the toolchain plugin configuration.
     *
     * @param requirements key value pair, may not be {@code null}
     * @return {@code true} if the requirements match, otherwise {@code false}
     */

    private static class OptionComparator implements Comparator<Option> {
        public int compare(Option opt1, Option opt2) {
            String s1 = opt1.getOpt() != null ? opt1.getOpt() : opt1.getLongOpt();
            String s2 = opt2.getOpt() != null ? opt2.getOpt() : opt2.getLongOpt();
            return s1.compareToIgnoreCase(s2);
        }
    }

    private static class CLIManagerExtension extends CLIManager {

                                "required": False,
                                "schema": IsDict(
                                    {
                                        "anyOf": [{"type": "string"}, {"type": "null"}],
                                        "title": "Fatebook Tracker",
                                    }
                                )
                                | IsDict(

    final boolean shutdownWhenStartupFinishes;

    /**
     * The exception that caused this service to fail. This will be {@code null} unless the service
     * has failed.
     */
    @CheckForNull final Throwable failure;

    StateSnapshot(State internalState) {
      this(internalState, false, null);
    }

    StateSnapshot(