stopEchoTest method

FutureOr<int> stopEchoTest()

@detail api @author qipengxiang @brief Stops the current call test.
After calling startEchoTest:playDelay:{@link #ByteRTCEngine#startEchoTest:playDelay}, you must call this API to stop the test. @return API call result:
- 0: Success - -3: Failure, no test is in progress. @note After stopping the test with this API, all the system devices and streams are restored to the state they were in before the test.

Implementation

FutureOr<int> stopEchoTest() async {
  return await nativeCall('stopEchoTest', []);
}