nested cursors in jdbc adapter

I have a requirement to retrieve data from a nested cursor returned from a pl/sql stored proc. JDBC adatpter Documentation says it can be implement using jdbc adapter but I could not figure out how? I could see that when multiple cursors are returned we can use stored procedure with signature and it works fine but when a cursor has a cursor within then i could not find how the output parameter has to be configured for jdbc adapter? If anyone is aware of this please help.