How to properly handle TriggerMessage flow?

[ic-768]

I create a charge point like so:

export const cpHandlers: RequestHandler<
  CentralSystemAction<"v1.6-json">,
  ValidationError | undefined,
  "v1.6-json"
> = (req) => {
  switch (req.action) {
    case "TriggerMessage":
      return {
        status: "Accepted",
        action: "TriggerMessage",
        ocppVersion: req.ocppVersion,
      };
  }
  throw new Error("message not supported");
};


export const cp = new ChargePoint(
  chargerId,
  cpHandlers,
  `${wsUrl}/${chargerId}`

According to the specs, immediately after confirming TriggerMessage, I need to send the message being triggered.
What is the intended way to do this?

I can't seem to find a way to guarantee that it will be sent AFTER returning the confirmation for TriggerMessage.
I thought about adding a setTimeOut with the requested message before returning the confirmation, but it seems wrong.