*
 * @author Colin Decker
 */
@GwtCompatible
final class GoogleHelpers {

  private GoogleHelpers() {}

  static void assertEmpty(Multimap<?, ?> multimap) {
    if (!multimap.isEmpty()) {
      fail("Not true that " + multimap + " is empty");
    }
  }

   */
  @CanIgnoreReturnValue
  public @Nullable E pollLast() {
    return isEmpty() ? null : removeAndGet(getMaxElementIndex());
  }

  /**
   * Removes and returns the greatest element of this queue.
   *
   * @throws NoSuchElementException if the queue is empty
   */
  @CanIgnoreReturnValue
  public E removeLast() {
    if (isEmpty()) {
      throw new NoSuchElementException();
    }

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

        }
    }

    @Override
    public List<String> readMultipleLines() throws IOException {
        List<String> lines = new ArrayList<>();
        for (String line = readLine(); line != null && !line.isEmpty(); line = readLine()) {
            lines.add(line);
        }
        return lines;
    }

    @Override
    public void write(String line) throws IOException {
        try {

        String c = getClassifier();
        return getGroupId()
                + ':'
                + getArtifactId()
                + ':'
                + getExtension()
                + (c.isEmpty() ? "" : ":" + c)
                + ':'
                + getVersion();
    }

    /**
     * {@return the group identifier of the artifact}.
     *
     * @see ArtifactCoordinates#getGroupId()
     */

            repository.setId(mirror.getId());
            repository.setUrl(mirror.getUrl());

            if (mirror.getLayout() != null && !mirror.getLayout().isEmpty()) {
                repository.setLayout(original.getLayout());
            }

            repository.setBlocked(mirror.isBlocked());
        }
    }

        SimpleProblemCollector problems = new SimpleProblemCollector();
        List<Profile> active = selector.getActiveProfiles(profiles, context, problems);
        assertTrue(
                active.isEmpty(), "Expected collection to be empty but had " + active.size() + " elements: " + active);
        assertEquals(1, problems.getErrors().size());
        assertEquals(

                .filter(a -> a.getVersion().startsWith("3."))
                .map(a -> a.getGroupId() + ":" + a.getArtifactId() + ":" + a.getVersion())
                .collect(Collectors.toSet());

        if (!mavenArtifacts.isEmpty()) {
            pluginValidationManager.reportPluginValidationIssue(
                    PluginValidationManager.IssueLocality.EXTERNAL,
                    session,
                    pluginArtifact,

    assertFalse(multimap.containsValue(1));
    assertFalse(multimap.containsEntry("foo", 1));
    assertTrue(multimap.entries().isEmpty());
    assertTrue(multimap.equals(HashMultimap.create()));
    assertEquals(emptySet(), multimap.get("foo"));
    assertEquals(0, multimap.hashCode());
    assertTrue(multimap.isEmpty());
    assertEquals(HashMultiset.create(), multimap.keys());
    assertEquals(emptySet(), multimap.keySet());

    /**
     * Reads all stories in the folders provided, asserts if no story found.
     */
    @JvmStatic
    protected fun createStories(interopTests: Array<String>): List<Any> {
      if (interopTests.isEmpty()) return listOf<Any>(Story.MISSING)

      val result = mutableListOf<Any>()
      for (interopTestName in interopTests) {
        val stories = HpackJsonUtil.readStories(interopTestName)
        result.addAll(stories)