Accessing absence information through REST

Hi,

I'm trying to access contributor absence information through the REST API - the only way I have found so far is to go to /rpt/repository/apt which seems to give me all contributor absences, plus a large amount of other stuff I'm not interested in.

The type of query I'm looking to carry out is as follows;
- Return all contributor absence records between a defined start date and end date

Additionally, it would be useful to be able to do the following;
- The above, filtered by Focus Team (or Team Area)
- Have the results returned in JSON format rather than XML

Thanks in advance for any assistance you can give.
Regards,

Matt