ostream.writeLong(created); ostream.writeLong(lastModified);
	public byte[] serialize() {		final VariableByteOutputStream ostream = new VariableByteOutputStream(7);		try {			long address;			for (Iterator i = childList.iterator(); i.hasNext();) {				address = ((Long) i.next()).longValue();				ostream.writeInt(StorageAddress.pageFromPointer(address));				ostream.writeShort(StorageAddress.tidFromPointer(address));			}			((DocumentTypeImpl) docType).write(ostream);			final byte[] data = ostream.toByteArray();			ostream.close();			return data;		} catch (IOException e) {			LOG.warn("io error while writing document data", e);			return null;		}	}