public override void Write(BinaryWriter writer, object obj)
{
var p = (Position)obj;
if (this.version >= 1)
{
writer.Write(p.PortfolioId);
writer.Write(p.InstrumentId);
writer.Write(p.Amount);
writer.Write(p.QtyBought);
writer.Write(p.QtySold);
}
}
}