code: public List<CmsLuceneField> getLuceneFields() {
  
          List<CmsLuceneField> result = new ArrayList<CmsLuceneField>();
          for (CmsSearchField field : getFields()) {
              if (field instanceof CmsLuceneField) {
                  result.add((CmsLuceneField)field);
              }
          }
          return result;
      }
docs: Returns a list of the concrete Lucene search fields.<p>
  
  @return a list of lucene search fields