Thanks Eelco for pointing that out. There is also an effort to get this implemented into java and SMACK
https://community.igniterealtime.org/blogs/ignite/2015/09/14/smack-414-released
The 323 and 325 and the accompanying other IoT Xep's are as noted in experimental and needs feedback from other's.
There are several that use them and one of the main advantages are the demand for "unit" in 323 and 325 when sending data between sensors and actuators
Sadaf: Very fun with your research, If you have any specific questions send them to me or feel free to continue the discussion here on list.