protected override void Parse(ref BitStreamReader bsr)
        {
            EntryCount = bsr.ReadByte();
            uint bitLen = DemoInfo.Game == SourceGame.PORTAL_1_1910503
                                ? bsr.ReadVarUInt32()
                                : bsr.ReadUInt(DemoInfo.IsLeft4Dead2() ? 18 : 17);

            _data = bsr.SplitAndSkip(bitLen);

            // todo
        }