public void serialize(Slices slices, DataOutputPlus out, int version) throws IOException {
int size = slices.size();
out.writeVInt(size);
if (size == 0) return;
List<AbstractType<?>> types =
slices == ALL
? Collections.<AbstractType<?>>emptyList()
: ((ArrayBackedSlices) slices).comparator.subtypes();
for (Slice slice : slices) Slice.serializer.serialize(slice, out, version, types);
}
