Function postMessageLater

postMessageLater(str: string, delayMs: number, durationMs: number): number
Parameters
- str: string
  the text of the message to post
- delayMs: number
  how long to wait before posting the message
- durationMs: number
  how long after posting should the message endure in the system?
Returns number
the timeoutId returned from setTimeout, in case the user wants to clear it.
- Defined in messaging.ts:99