There have been questions about the jar and dependencies of the REST capabilities, but I remember seeing that the documentation of future releases would include information on the admin-rest-client type. Which functions does the client support?
I'm referring to this previous answer-- https://groups.google.com/forum/#!topic/kaaproject/BUVMRTgy99c What are the methods supported for AdminClient?
Details you can find in the source code of AdminClient. There are methods from controller classes. Also, you can refer to the Server REST APIs documentation.