@Override
 QueryBuilder getQuery() {
   return QueryBuilders.termQuery(
       TestIndexField.STRING_FIELD.toString(),
       randomAsciiOfLengthBetween(MIN_SMALL_INTERVAL, MAX_SMALL_INTERVAL));
 }
 @Override
 QueryBuilder getQuery() {
   return QueryBuilders.wildcardQuery(
       TestIndexField.STRING_FIELD.toString(), randomBoolean() ? "*" : "?");
 }