* _distinct = a distinct column lookup.
* _requestMeta = default behaviour of Roo stores.. on first query..
*
- * csvCols = return data as csv
+ * csvCols[0] csvCols[1].... = .... column titles for CSV output
*
- * csvTitles = return data as csv
+ * csvTitle[0], csvTitle[1] .... = columns to use for CSV output
*
* sort = sort column (',' comma delimited)
* dir = sort direction ?? in future comma delimited...