TimerFixedRate

id: py-TimerFixedRate

Recurring timer that fires at a fixed interval.

Property	Type	Description
`Period`	`int`	Interval in milliseconds
`Payload`	`any`	Data passed to the timer callback
`StartAt`	`DateTime`	Optional — delay first execution until this time

{
    "Period": 60000,               # Every 60 seconds
    "Payload": {"jobType": "heartbeat"},
    "StartAt": DateTime.now().plus_minutes(5)
}