NearbyConnectionsWalkieTalkie/app/src/main/java/com/google/location/nearby/apps/walkietalkie/AudioPlayer.java [93:101]:
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  public void stop() {
    stopInternal();
    try {
      mThread.join();
    } catch (InterruptedException e) {
      Log.e(TAG, "Interrupted while joining AudioRecorder thread", e);
      Thread.currentThread().interrupt();
    }
  }
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NearbyConnectionsWalkieTalkie/app/src/main/java/com/google/location/nearby/apps/walkietalkie/AudioRecorder.java [115:123]:
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  public void stop() {
    stopInternal();
    try {
      mThread.join();
    } catch (InterruptedException e) {
      Log.e(TAG, "Interrupted while joining AudioRecorder thread", e);
      Thread.currentThread().interrupt();
    }
  }
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