shadows/framework/src/main/java/org/robolectric/shadows/ShadowAudioManager.java
@Implementation(minSdk = O)
  protected int abandonAudioFocusRequest(android.media.AudioFocusRequest audioFocusRequest) {
    lastAbandonedAudioFocusRequest = audioFocusRequest;
    return nextResponseValue;
  }
@Implementation(minSdk = O)
  protected int abandonAudioFocusRequest(android.media.AudioFocusRequest audioFocusRequest) {
    lastAbandonedAudioFocusRequest = audioFocusRequest;
    return nextResponseValue;
  }
Provides a mock like interface for the abandonAudioFocusRequest method by storing the request
object for later inspection and returning the value specified in setNextFocusRequestResponse.