*/
  public static void verify(boolean expression) {
    if (!expression) {
      throw new VerifyException();
    }
  }

  /**
   * Ensures that {@code expression} is {@code true}, throwing a {@code VerifyException} with a
   * custom message otherwise.
   *
   * @param expression a boolean expression

    testRotate(new boolean[] {true}, -2, new boolean[] {true});
    testRotate(new boolean[] {true}, -1, new boolean[] {true});
    testRotate(new boolean[] {true}, 0, new boolean[] {true});
    testRotate(new boolean[] {true}, 1, new boolean[] {true});
    testRotate(new boolean[] {true}, 2, new boolean[] {true});

    testRotate(new boolean[] {true, false}, -3, new boolean[] {false, true});

    {
        return sv.getClassifier() + ":" + sv.getExtension();
    }

    public boolean merge( Metadata sourceMetadata )
    {
        boolean changed = false;

        for ( Plugin plugin : sourceMetadata.getPlugins() )
        {
            boolean found = false;

            for ( Plugin preExisting : getPlugins() )
            {

    private File localRepositoryPath;

    private boolean offline = false;

    private boolean interactiveMode = true;

    private boolean cacheTransferError = false;

    private boolean cacheNotFound = false;

    private boolean ignoreMissingArtifactDescriptor = true;

    private boolean ignoreInvalidArtifactDescriptor = true;

    private boolean ignoreTransitiveRepositories;

    private List<Proxy> proxies;

            String groupId,
            String artifactId,
            VersionRange versionRange,
            String type,
            String classifier,
            String scope,
            boolean optional) {
        return createArtifact(groupId, artifactId, versionRange, type, classifier, scope, null, optional);
    }

    @Override
    public Artifact createDependencyArtifact(
            String groupId,

  public NavigableSet<E> subSet(
      @ParametricNullness E fromElement,
      boolean fromInclusive,
      @ParametricNullness E toElement,
      boolean toInclusive) {
    return delegate().subSet(fromElement, fromInclusive, toElement, toInclusive);
  }

  /**
   * A sensible definition of {@link #subSet(Object, boolean, Object, boolean)} in terms of the

    }

    @Override
    public Optional<Boolean> nonRecursive() {
        if (commandLine.hasOption(CLIManager.NON_RECURSIVE)) {
            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override
    public Optional<Boolean> updateSnapshots() {
        if (commandLine.hasOption(CLIManager.UPDATE_SNAPSHOTS)) {
            return Optional.of(Boolean.TRUE);
        }

        return true;
    }

    private boolean ensureAtLeastOneNonNull(ActivationOS os) {
        return os.getArch() != null || os.getFamily() != null || os.getName() != null || os.getVersion() != null;
    }

    private boolean determineVersionMatch(String expectedVersion, String actualVersion) {
        String test = expectedVersion;
        boolean reverse = false;
        final boolean result;

        @Override
        public String getPackaging() {
            return "maven-plugin";
        }

        @Override
        @Deprecated
        public boolean isAddedToClasspath() {
            return true;
        }

        @Override
        public boolean isIncludesDependencies() {
            return false;
        }
    }

        }
        return elements;
    }

    public void appendChild(String text) {
        appendChild(document.createTextNode(text));
    }

    public void appendChild(Node node) {
        boolean inPara = false;
        if (node instanceof Element) {
            Element element = (Element) node;
            if (element.getTagName().equals("para") && stack.getFirst().getTagName().equals("para")) {
                pop();