stopEchoTest abstract method
Stops the audio call loopback test.
After calling startEchoTest, you must call this method to end the test. Otherwise, the user cannot perform another audio/video loopback test or join a channel.
Returns When the method call succeeds, there is no return value; when fails, the AgoraRtcException exception is thrown. You need to catch the exception and handle it accordingly. See Error Codes for details and resolution suggestions.
Implementation
Future<void> stopEchoTest();