public virtual void TestFieldSortMultiCustomSearcher()
{
// log("Run testFieldSortMultiCustomSearcher");
// define the sort criteria
Sort custSort = new Sort(new SortField("publicationDate_", SortField.STRING), SortField.FIELD_SCORE);
Searcher searcher = new MultiSearcher(new Searchable[]{new CustomSearcher(this, index, 0), new CustomSearcher(this, index, 2)});
// search and check hits
MatchHits(searcher, custSort);
}