String[] array = Iterators.toArray(iterator, String.class);
    assertThat(array).isEmpty();
  }

  @GwtIncompatible // Iterators.toArray(Iterator, Class)
  public void testToArraySingleton() {
    Iterator<String> iterator = singletonList("a").iterator();
    String[] array = Iterators.toArray(iterator, String.class);
    assertThat(array).isEqualTo(new String[] {"a"});
  }

    String[] array = Iterators.toArray(iterator, String.class);
    assertThat(array).isEmpty();
  }

  @GwtIncompatible // Iterators.toArray(Iterator, Class)
  public void testToArraySingleton() {
    Iterator<String> iterator = singletonList("a").iterator();
    String[] array = Iterators.toArray(iterator, String.class);
    assertThat(array).isEqualTo(new String[] {"a"});
  }

  }

  private static final class ArrayItr<T extends @Nullable Object>
      extends AbstractIndexedListIterator<T> {
    static final UnmodifiableListIterator<Object> EMPTY = new ArrayItr<>(new Object[0], 0);

    private final T[] array;

    ArrayItr(T[] array, int position) {
      super(array.length, position);
      this.array = array;
    }

    @Override

  }

  private static final class ArrayItr<T extends @Nullable Object>
      extends AbstractIndexedListIterator<T> {
    static final UnmodifiableListIterator<Object> EMPTY = new ArrayItr<>(new Object[0], 0);

    private final T[] array;

    ArrayItr(T[] array, int position) {
      super(array.length, position);
      this.array = array;
    }

    @Override

//  num_opers - `num_opers` contains the number of elements in the `opers` array
//              or a special value of -1 meaning that no array is given.
//              The distinction between an empty array of operations and no
//              array of operations is necessary to distinguish the case of
//              creating a function with no body (e.g. identity or permutation)

    }
    // array is covariant. component type is subtype, so is the array type.
    // requireNonNull is safe because we call getArraySubtype only when isArray().
    TypeToken<?> componentSubtype =
        requireNonNull(getComponentType()).getSubtype(subclassComponentType);
    @SuppressWarnings("unchecked") // component type is subtype, so is array type.
    TypeToken<? extends T> result =

          // there's a way around creating the separate sortedKeys array, and if we're allocating
          // one array of size n, we might as well allocate two -- to say nothing of the allocation
          // done in Arrays.sort.
          for (int i = 0; i < size; i++) {
            // We're careful to put only K instances in.
            if (i > 0 && comparator.compare((K) sortedKeys[i - 1], (K) sortedKeys[i]) == 0) {

      checkNotNull(sequence);
      return "";
    }

    @Override
    public String replaceFrom(CharSequence sequence, char replacement) {
      char[] array = new char[sequence.length()];
      Arrays.fill(array, replacement);
      return new String(array);
    }

    @Override
    public String replaceFrom(CharSequence sequence, CharSequence replacement) {

                                        "schema": {
                                            "title": "Response Foo Post Root",
                                            "type": "array",
                                            "items": {
                                                "$ref": "#/components/schemas/Item"
                                            },
                                        }

    }

    /**
     * Converts HC4 Hc4Authentication array to HC5 Hc5Authentication array.
     * This provides backward compatibility for existing configurations.
     *
     * @param hc4Auths the HC4 authentication array
     * @return the HC5 authentication array
     */
    protected Hc5Authentication[] convertFromHc4Authentication(final Hc4Authentication[] hc4Auths) {