* ok if it's in a method call. If the index passed in is 0 then no copying will be done.
   */
  private static char[] growBuffer(char[] dest, int index, int size) {
    if (size < 0) { // overflow - should be OutOfMemoryError but GWT/j2cl don't support it
      throw new AssertionError("Cannot increase internal buffer any further");
    }
    char[] copy = new char[size];
    if (index > 0) {

    future.set(
        new Object() {
          @Override
          public String toString() {
            throw new OutOfMemoryError();
          }

          @Override
          public int hashCode() {
            throw new OutOfMemoryError();
          }
        });

    String unused = future.toString();

    SettableFuture<Object> future2 = SettableFuture.create();

    @Override
    public MavenExecutionResult execute(MavenExecutionRequest request) {
        MavenExecutionResult result;

        try {
            result = doExecute(request);
        } catch (OutOfMemoryError e) {
            result = addExceptionToResult(new DefaultMavenExecutionResult(), e);
        } catch (RuntimeException e) {
            // TODO Hack to make the cycle detection the same for the new graph builder

_2019-09-29_

 *  Fix: Cancel calls that fail due to unexpected exceptions. We had a bug where an enqueued call
    would never call back if it crashed with an unchecked throwable, such as a
    `NullPointerException` or `OutOfMemoryError`. We now call `Callback.onFailure()` with an
    `IOException` that reports the call as canceled. The triggering exception is still delivered to
    the thread's `UncaughtExceptionHandler`.

   *
   * <p><b>Note:</b> The current implementation eagerly allocates storage for {@code size} elements.
   * As a consequence, passing values like {@code Integer.MAX_VALUE} can lead to {@link
   * OutOfMemoryError}.
   *
   * <p><b>Note:</b> if {@code iterable} is a {@link List}, use {@link Lists#partition(List, int)}
   * instead.
   *
   * @param iterable the iterable to return a partitioned view of

   *
   * <p><b>Note:</b> The current implementation eagerly allocates storage for {@code size} elements.
   * As a consequence, passing values like {@code Integer.MAX_VALUE} can lead to {@link
   * OutOfMemoryError}.
   *
   * @param iterator the iterator to return a partitioned view of
   * @param size the desired size of each partition (the last may be smaller)