@Override
        public @Nullable Object execute(Iterator<?> iterator) {
          iterator.remove();
          return null;
        }
      };

  private static final IteratorOperation NEXT_METHOD =
      new IteratorOperation() {
        @Override
        public @Nullable Object execute(Iterator<?> iterator) {
          return iterator.next();
        }
      };

    }
  }

  /**
   * Verifies that an Iterator is unmodifiable.
   *
   * <p>This test only works with iterators that iterate over a finite set.
   */
  public static void assertIteratorIsUnmodifiable(Iterator<?> iterator) {
    while (iterator.hasNext()) {
      iterator.next();
      try {
        iterator.remove();
        fail("Remove on unmodifiable iterator succeeded");

   */
  static class IteratorWithSunJavaBug6529795<T> implements Iterator<T> {
    Iterator<T> iterator;
    boolean nextThrewException;

    IteratorWithSunJavaBug6529795(Iterator<T> iterator) {
      this.iterator = iterator;
    }

    @Override
    public boolean hasNext() {
      return iterator.hasNext();
    }

    @Override
    public T next() {
      try {

   */
  static class IteratorWithSunJavaBug6529795<T> implements Iterator<T> {
    Iterator<T> iterator;
    boolean nextThrewException;

    IteratorWithSunJavaBug6529795(Iterator<T> iterator) {
      this.iterator = iterator;
    }

    @Override
    public boolean hasNext() {
      return iterator.hasNext();
    }

    @Override
    public T next() {
      try {

  }

  static <T extends @Nullable Object> Iterator<T> cycle(Iterable<T> iterable) {
    return new Iterator<T>() {
      Iterator<T> iterator = Collections.<T>emptySet().iterator();

      @Override
      public boolean hasNext() {
        return true;
      }

      @Override
      public T next() {
        if (!iterator.hasNext()) {
          iterator = iterable.iterator();
        }

  }

  static <T extends @Nullable Object> Iterator<T> cycle(Iterable<T> iterable) {
    return new Iterator<T>() {
      Iterator<T> iterator = Collections.<T>emptySet().iterator();

      @Override
      public boolean hasNext() {
        return true;
      }

      @Override
      public T next() {
        if (!iterator.hasNext()) {
          iterator = iterable.iterator();
        }

		if !goexits(t, func() {
			next, stop = Pull(goexitSeq())
			next()
		}) {
			t.Fatal("failed to Goexit from next")
		}
		if x, ok := next(); x != 0 || ok {
			t.Fatal("iterator returned valid value after iterator Goexited")
		}
		stop()
	})
	t.Run("stop", func(t *testing.T) {
		next, stop := Pull(goexitCleanupSeq())
		x, ok := next()
		if !ok || x != 55 {

            @groovy.transform.TupleConstructor
            class BuildableArtifact implements Buildable, Iterable<File> {
                FileCollection files

                Iterator<File> iterator() {
                    files.iterator()
                }

                TaskDependency getBuildDependencies() {
                    files.getBuildDependencies()
                }
            }

            new ArrayList<>(unfiltered.implementationModulepath)
        );

        // Filter additional modules which are provided by the classpath
        Iterator<? extends File> it = classpath.iterator();
        while (it.hasNext() && !mutable.isEmpty()) {
            String name = it.next().getName();

        final List<String> versions

        private Versions(String... given) {
            versions = Arrays.asList(given)
        }

        @Override
        Iterator<String> iterator() {
            return versions.iterator()
        }
    }

    private static final String INIT_SCRIPT_LOCATION = "org.gradle.smoketests.init.script"

    @TempDir
    File testProjectDir
    File buildFile