docs: private synchronized Producer<CloseableReference<CloseableImage>>
    getQualifiedResourceFetchSequence() {
      if (mQualifiedResourceFetchSequence == null) {
        QualifiedResourceFetchProducer qualifiedResourceFetchProducer =
            mProducerFactory.newQualifiedResourceFetchProducer();
        mQualifiedResourceFetchSequence =
            newBitmapCacheGetToLocalTransformSequence(qualifiedResourceFetchProducer);
      }
      return mQualifiedResourceFetchSequence;
    }