public SortFilterEventInfoHashtable GetSortFilterEventInfo(ChunkManager.RenderingChunkManager chunkManager)
        {
            IntermediateFormatReader intermediateFormatReader = null;

            if (this.m_sortFilterEventInfo != null)
            {
                return((SortFilterEventInfoHashtable)this.m_sortFilterEventInfo);
            }
            intermediateFormatReader = chunkManager.GetSpecialChunkReader(ChunkManager.SpecialChunkName.SortFilterEventInfo);
            if (intermediateFormatReader != null)
            {
                return(intermediateFormatReader.ReadSortFilterEventInfoHashtable());
            }
            return(null);
        }