}
}
public Collection<String> getQueryTerms() {
SearchRequestBuilder srb = createSearchBuilder();
FilteredQueryBuilder fb = QueryBuilders.filteredQuery(
QueryBuilders.matchAllQuery(), FilterBuilders.existsFilter(TOKEN));
srb.addFacet(FacetBuilders.termsFacet(QUERY_TERMS).field(QUERY_TERMS).size(1000)).
setQuery(fb);
SearchResponse rsp = srb.execute().actionGet();