docs: @Override
  	public void search(SearchRequest request, OutputStream response, String format) throws IndexerException {
  		SolrSearcher searcher = new SolrSearcher(((CommonsHttpSolrServer) solr).getBaseURL());
  		String username = usernameMap.get("solr");
  		String password = passwordMap.get("solr");
  		if (username != null && password != null) {
  			searcher.authenticate(username, password);
  		}
  		InputStream result;
  		try {
  			request.addParam("wt", format);
  			result = searcher.get(request.getQuery(), request.getParamsMap(), false);
  			IOUtils.copy(result, response);
  			result.close();
  		} catch (IOException ioe) {
  			throw new IndexerException(ioe);
  		}
  	}