startEchoTest method Null safety

Future<void> startEchoTest(
  1. int intervalInSeconds

Starts an audio call test.

In the audio call test, you record your voice. If the recording plays back within the set time interval, the audio devices and the network connection are working properly.


Parameter intervalInSeconds The time interval (s) between when you speak and when the recording plays back.


Future<void> startEchoTest(int intervalInSeconds) {
  return _invokeMethod('startEchoTest', {
    'intervalInSeconds': intervalInSeconds,