Replies to an invitation specified by id. The user must be the invitee.
URL:
http://{domain_name}/{rest_context_name}/private/v1/calendar/invitations/{id}
Parameters:
Required (path parameters):
| Parameter | Description | 
|---|---|
| id | Identity of the invitation. | 
Optional (query parameters):
| Parameter | Description | 
|---|---|
| status | New status to update ("", "maybe", "yes", "no"). | 
Request example:
PUT: http://localhost:8080/rest/private/v1/calendar/invitations/evt123:root
Response:
 HTTP status code:
            200 if updated successfully, 404 if invitation not found, 400 if status is invalid,
            401 if the user does not have permission, 503 if any error during save process.