@Override
  public void updateDiskCacheKey(@NonNull MessageDigest messageDigest) {
    messageDigest.update((ID + pixel).getBytes(CHARSET));
  }
Applies a Pixelation effect to the image.
<p>
The pixel with a default of 10.0.
transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/PixelationFilterTransformation.java