sample java SDK code using semantic layer

Hello,
I try to connect CMS and retreive all informations about .dtx et .blx for all universes.
 
Is there any code Java example to inspire me
 
I find this http://help.sap.com/saphelpiis_sbo41sp5sl-sdk/frameset.htm?45f0b9626e041014910aba7db0e91070.html
 
i can connect but i dont know how read universes (UNX) and access to them dtx and blx informations
 
thank you