@Override
    public int describeContents() {
      return 0;
    }
ShadowParcel doesn't correctly handle {@link Parcel#writeStrongBinder(IBinder)} or {@link
Parcel#readStrongBinder()}, so we shim a simple implementation that uses an in-memory map to
read and write Binder objects.
jobdispatcher/src/test/java/com/firebase/jobdispatcher/GooglePlayCallbackExtractorTest.java