public List<FacetResult> accumulate(ScoredDocIDs docids) throws IOException {
// Replacing the original searchParams with the over-sampled (and without statistics-compute)
FacetSearchParams original = delegee.searchParams;
delegee.searchParams = sampler.overSampledSearchParams(original);
SampleResult sampleSet = sampler.getSampleSet(docids);
List<FacetResult> sampleRes = delegee.accumulate(sampleSet.docids);
List<FacetResult> fixedRes = new ArrayList<FacetResult>();
for (FacetResult fres : sampleRes) {