Getting help in the HTTP API
In GeognoSIS 9, you can use the HTTP OPTIONS request on any endpoint.
Use a request without the .json extension to see all possible representations:
OPTIONS http://server:port/geognosis/9/sessions/session_id/map/overlays/0/items
Including the .json extension will also return a list of operations. For eg use:
OPTIONS http://server:port/geognosis/9/sessions/session_id/map/overlays/0/items.json
For reference using the same request with GET returns a list of items in overlay 0:
GET http://server:port/geognosis/9/sessions/session_id/map/overlays/0/items.json