unsubscribe method

Future<void> unsubscribe()

Unsubscribe from the topic.

Implementation

Future<void> unsubscribe() async {
  if (subscribeId != null) {
    // Send the request and reset the subscription variables.
    await safeSend(Request(
      op: 'unsubscribe',
      id: subscribeId,
      topic: name,
    ));
    // await ros.requestUnsubscribe(id);
    subscription = null;
    subscribeId = null;
  }
}