Retrieves an incident event functionality

curl --request GET \
  --url https://api.rootly.com/v1/incident_event_functionalities/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "da8a4afe-6193-4fb8-919b-bcd3953f3329",
    "type": "incident_event_functionalities",
    "attributes": {
      "incident_event_id": "f0311f2a-bb40-48e7-85d0-fa68811a1f46",
      "functionality_id": "58450f0a-6af2-4c0c-844f-3340704ebb89",
      "status": "partial_outage"
    }
  }
}