private void SerializeDefaults(GenericWriter writer)
{
writer.SetVersion(0);
writer.Write(Serial);
Options.Serialize(writer);
writer.Write(Deleted);
writer.Write(Generated);
writer.Write(Created);
writer.WriteInstanceMap(Map);
writer.WriteBlockList(Zones, (w, z) => w.WriteInstanceRegion(z));
writer.WriteMobileList(Group);
writer.WriteMobileList(ActiveGroup);
writer.WriteMobileList(MobileSpawns);
writer.WriteItemList(ItemSpawns);
writer.WriteBlockList(Loot, (w, e) => w.WriteType(e, t => e.Serialize(w)));
}
