MoreLikeThisHelper mlt = new MoreLikeThisHelper( params, searcher );
List<Query> filters = SolrPluginUtils.parseFilterQueries(req);
// Hold on to the interesting terms if relevant
TermStyle termStyle = TermStyle.get( params.get( MoreLikeThisParams.INTERESTING_TERMS ) );
List<InterestingTerm> interesting = (termStyle == TermStyle.NONE )
? null : new ArrayList<InterestingTerm>( mlt.mlt.getMaxQueryTerms() );
// What fields do we need to return
String fl = params.get(CommonParams.FL);