_property_table.write(propStream);
// _header.setPropertyStart has been updated on write ...
// HeaderBlock
HeaderBlockWriter hbw = new HeaderBlockWriter(_header);
hbw.writeBlock( getBlockAt(-1) );
// BATs
for(BATBlock bat : _bat_blocks) {
ByteBuffer block = getBlockAt(bat.getOurBlockIndex());
BlockAllocationTableWriter.writeBlock(bat, block);