@Override
  public void onFetchCompletion(VolleyNetworkFetchState fetchState, int byteSize) {
    fetchState.fetchCompleteTime = SystemClock.elapsedRealtime();
  }
@param requestQueue The Volley {@link RequestQueue} to use
imagepipeline-backends/imagepipeline-volley/src/main/java/com/facebook/imagepipeline/backends/volley/VolleyNetworkFetcher.java