code: protected Query getMultiTermQueryFilter(String field, List<String> terms) {
  
          return getMultiTermQueryFilter(field, null, terms);
      }
docs: Returns a cached Lucene term query filter for the given field and terms.<p>
  
  @param field the field to use
  @param terms the term to use
  
  @return a cached Lucene term query filter for the given field and terms