Is it possible to get "plex" information from the REST API

I would like to determine the plex settings for a job via REST. I thought the /pages collection would have this information.

Please take at the following link:

http://help.objectiflune.com/en/pres-connect-rest-api-cookbook/1.8/#Cookbook/Working_Examples/Working_with_the_Entity_Services/Finding_Specific_Data_Entities_in_the_Server.htm

I looked through that, and setting the “Duplex” option doesn’t seem to get me results I can use, or more accurately, that I know how to use.

I see in the “contentpages” database table, that there is a Duplex field and page ranges, but I have no idea how to relate those values to specific pages of specific jobs.

So to rephrase my question, how would I modify this REST call to return not only the page counts and page counts per media type, but also if a page is part of a range that is being duplexed (or not):

http://localhost:9340/rest/serverengine/entity/contentsets/" + contentsetid + "/pages?detail=true