newSummary = IndexSummaryBuilder.downsample(indexSummary, samplingLevel, minIndexInterval, getPartitioner());
newSummary = IndexSummaryBuilder.downsample(indexSummary, samplingLevel, minIndexInterval, getPartitioner());
newSummary = IndexSummaryBuilder.downsample(indexSummary, samplingLevel, minIndexInterval, getPartitioner());
newSummary = IndexSummaryBuilder.downsample(indexSummary, samplingLevel, minIndexInterval, partitioner);