@Override
    public Map<String, String> getFieldNames() {
        final Map<String, String> retValue = super.getFieldNames();
        retValue.putAll(singleFilterNames);
        return retValue;
    }
@ Override public Map < String , String > getFieldNames ( ) { final Map < String , String > retValue = super . getFieldNames ( ) ; retValue . putAll ( singleFilterNames ) ; return retValue ; }
@return A map of the expanded filter field names (i.e. with regular
expressions) mapped to their descriptions