@Override
  public void putExtras(@Nullable Map<String, ? extends Object> extras) {
    if (extras == null) {
      return;
    }

    for (String extra : mImageExtrasList) {
      Object val = extras.get(extra);
      if (val == null) {
        continue;
      }
      mExtras.put(extra, val);
    }
  }
Sets extras that match mImageExtrasList to this image from supplied extras
imagepipeline-base/src/main/java/com/facebook/imagepipeline/image/BaseCloseableImage.java