private File file;

  /** ByteArrayOutputStream that exposes its internals. */
  private static class MemoryOutput extends ByteArrayOutputStream {
    byte[] getBuffer() {
      return buf;
    }

    int getCount() {
      return count;
    }
  }

  /** Returns the file holding the data (possibly null). */
  @VisibleForTesting
  @CheckForNull
  synchronized File getFile() {
    return file;
  }

  /**

		VolumeContext:   req.GetVolumeContext(),
	}
	if req.GetVolumeCapability().GetMount() != nil {
		publishedVolume.FSType = req.GetVolumeCapability().GetMount().FsType
		publishedVolume.MountFlags = req.GetVolumeCapability().GetMount().MountFlags
		publishedVolume.VolumeMountGroup = req.GetVolumeCapability().GetMount().VolumeMountGroup
	}
	f.nodePublishedVolumes[req.GetVolumeId()] = publishedVolume

    for (auto op : require_device_ordinal_ops) {
      if (op->getAttrOfType<IntegerAttr>(kDeviceOrdinalAttr).getInt() == -1) {
        OpBuilder builder(op);
        int device_ordinal =
            op->getAttrOfType<IntegerAttr>(kReplicaIdAttr).getInt() %
            device_num;
        op->setAttr(kDeviceOrdinalAttr,
                    builder.getI64IntegerAttr(device_ordinal));
      }
    }
  }
}

    Iterator<Entry<E>> entryIterator = entryIterator();
    if (entryIterator.hasNext()) {
      Entry<E> result = entryIterator.next();
      result = Multisets.immutableEntry(result.getElement(), result.getCount());
      entryIterator.remove();
      return result;
    }
    return null;
  }

  @Override
  @CheckForNull
  public Entry<E> pollLastEntry() {

        GarbageCollectionEvent last = Iterables.getLast(events);
        // Total number of garbage collection events observed in the window
        long gcCountDelta = last.getCount() - first.getCount();
        // Time interval between the first event in the window and the last
        long timeDelta = TimeUnit.MILLISECONDS.toSeconds(last.getTimestamp() - first.getTimestamp());

  for (int i = 0; i < low_pads.size(); ++i) {
    new_low_pads[i] = low_pads[i].getInt() + parent_low_pads[i].getInt();
    new_high_pads[i] = high_pads[i].getInt() + parent_high_pads[i].getInt();
    new_interior_pads[i] =
        interior_pads[i].getInt() + parent_interior_pads[i].getInt();
  }

  // Replace pad_op with a new pad having new attributes, taking the

    Iterator<Entry<E>> entryIterator = entryIterator();
    if (entryIterator.hasNext()) {
      Entry<E> result = entryIterator.next();
      result = Multisets.immutableEntry(result.getElement(), result.getCount());
      entryIterator.remove();
      return result;
    }
    return null;
  }

  @Override
  @CheckForNull
  public Entry<E> pollLastEntry() {

    Iterator<Entry<E>> entryIterator = entryIterator();
    if (entryIterator.hasNext()) {
      Entry<E> result = entryIterator.next();
      result = Multisets.immutableEntry(result.getElement(), result.getCount());
      entryIterator.remove();
      return result;
    }
    return null;
  }

  @Override
  @CheckForNull
  public Entry<E> pollLastEntry() {

	err := f.GenerateStruct(&opts)
	if err != nil {
		return 0
	}
	opts.MeshHolder = meshHolder
	c := aggregate.NewController(opts)

	iterations, err := f.GetInt()
	if err != nil {
		return 0
	}
	for i := 0; i < iterations%30; i++ {
		opType, err := f.GetInt()
		if err != nil {
			return 0
		}
		switch ops[opType%maxOps] {
		case "AddRegistry":
			err = runAddRegistry(f, c)
		case "DeleteRegistry":

  @Override
  int copyIntoArray(@Nullable Object[] dst, int offset) {
    for (Multiset.Entry<E> entry : entrySet()) {
      Arrays.fill(dst, offset, offset + entry.getCount(), entry.getElement());
      offset += entry.getCount();
    }
    return offset;
  }

  @Override
  public boolean equals(@CheckForNull Object object) {
    return Multisets.equalsImpl(this, object);
  }

  @Override