@Override
  public void process(Bitmap destBitmap, Bitmap sourceBitmap) {
    long startTime = System.nanoTime();
    mPostprocessor.process(destBitmap, sourceBitmap);
    showDuration(System.nanoTime() - startTime);
  }
Postprocessor that measures the performance of {@link BasePostprocessor#process(Bitmap, Bitmap)}.
samples/showcase/src/main/java/com/facebook/fresco/samples/showcase/postprocessor/BenchmarkPostprocessorForDuplicatedBitmap.java