* <p>
     * Shortcut for {@code getService(TypeRegistry.class).require(...)}.
     *
     * @see org.apache.maven.api.services.TypeRegistry#require(String)
     */
    @Nonnull
    Type requireType(@Nonnull String id);

    /**
     * Obtain the {@link Language} from the specified {@code id}.
     * <p>
     * Shortcut for {@code getService(LanguageRegistry.class).require(...)}.

    }

    @Nonnull
    @Override
    public Collection<Listener> getListeners() {
        return Collections.unmodifiableCollection(listeners);
    }

    //
    // Shortcut implementations
    //

    /**
     * Shortcut for <code>getService(RepositoryFactory.class).createLocal(...)</code>
     *
     * @see RepositoryFactory#createLocal(Path)
     */
    @Override

  /**
   * Shortcut for {@code newHasher().putInt(input).hash()}; returns the hash code for the given
   * {@code int} value, interpreted in little-endian byte order. The implementation <i>might</i>
   * perform better than its longhand equivalent, but should not perform worse.
   *
   * @since 12.0
   */
  HashCode hashInt(int input);

  /**

    }

    @Nonnull
    @Override
    public Collection<Listener> getListeners() {
        return Collections.unmodifiableCollection(listeners);
    }

    //
    // Shortcut implementations
    //

    /**
     * Shortcut for <code>getService(RepositoryFactory.class).createLocal(...)</code>
     *
     * @see RepositoryFactory#createLocal(Path)
     */
    @Override

  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = ImmutableSortedMultiset.of();
    assertSame(c, ImmutableSortedMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {
    Collection<String> c = ImmutableSortedMultiset.of("a");
    assertSame(c, ImmutableSortedMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_immutableMultiset() {

  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = ImmutableSortedMultiset.of();
    assertSame(c, ImmutableSortedMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {
    Collection<String> c = ImmutableSortedMultiset.of("a");
    assertSame(c, ImmutableSortedMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_immutableMultiset() {

     *
     * @return {@code true} if the artifact is a snapshot, {@code false} otherwise
     * @see org.apache.maven.api.Session#isVersionSnapshot(String)
     */
    boolean isSnapshot();

    /**
     * Shortcut for {@code session.createArtifactCoordinate(artifact)}
     *
     * @return an {@link ArtifactCoordinate}
     * @see org.apache.maven.api.Session#createArtifactCoordinate(Artifact)
     */
    @Nonnull

    Set<String> unused = copyOf(iterable);
    assertEquals(1, iterable.count);
  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = of();
    assertEquals(Collections.<String>emptySet(), copyOf(c));
    assertSame(c, copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {
    Collection<String> c = of("a");
    assertEquals(Collections.singleton("a"), copyOf(c));

    Set<String> unused = copyOf(iterable);
    assertEquals(1, iterable.count);
  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = of();
    assertEquals(Collections.<String>emptySet(), copyOf(c));
    assertSame(c, copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {
    Collection<String> c = of("a");
    assertEquals(Collections.singleton("a"), copyOf(c));

  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = ImmutableMultiset.of();
    assertSame(c, ImmutableMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {
    Collection<String> c = ImmutableMultiset.of("a");
    assertSame(c, ImmutableMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_immutableMultiset() {