GET /system/open-adr
POST /system/open-adr
POST /system/open-adr/cancel-update
GET /system/open-adr/credential
POST /system/open-adr/credential
POST /system/open-adr/end-update
GET /system/open-adr/server
POST /system/open-adr/server
GET /system/open-adr/server/certificates
GET /system/open-adr/server/certificates/{certificate}
POST /system/open-adr/server/certificates/{certificate}/document
POST /system/open-adr/start-event
POST /system/open-adr/start-update
POST /system/open-adr/stop-event