Retrieve a function schedule by its id.
OK
The response for a failed request.
{- "id": 1,
- "name": "My schedule",
- "createdTime": 1730204346000,
- "description": "This is a nice schedule",
- "cronExpression": "* * * * *",
- "when": "Every hour",
- "functionId": 1,
- "functionExternalId": "my.known.id",
- "sessionId": "string"
}