code: private synchronized Producer<CloseableReference<CloseableImage>>
    getLocalResourceFetchSequence() {
      if (mLocalResourceFetchSequence == null) {
        LocalResourceFetchProducer localResourceFetchProducer =
            mProducerFactory.newLocalResourceFetchProducer();
        mLocalResourceFetchSequence =
            newBitmapCacheGetToLocalTransformSequence(localResourceFetchProducer);
      }
      return mLocalResourceFetchSequence;
    }
docs: bitmap cache get ->
  background thread hand-off -> multiplex -> bitmap cache -> decode ->
  branch on separate images
  -> exif resize and rotate -> exif thumbnail creation
  -> local image resize and rotate -> add meta data producer -> multiplex -> encoded cache ->
  (webp transcode) -> local resource fetch.