@Override
@Deprecated
public Object cluster(Query query, DocList docList, SolrQueryRequest sreq) {
SolrIndexSearcher searcher = sreq.getSearcher();
SolrDocumentList solrDocList;
try {
Map<SolrDocument,Integer> docIds = new HashMap<SolrDocument, Integer>(docList.size());
solrDocList = SolrPluginUtils.docListToSolrDocumentList( docList, searcher, getFieldsToLoad(sreq), docIds );
return cluster(query, solrDocList, docIds, sreq);
} catch (IOException e) {