docs: public Producer<Void> getEncodedImagePrefetchProducerSequence(ImageRequest imageRequest) {
      validateEncodedImageRequest(imageRequest);
  
      switch (imageRequest.getSourceUriType()) {
        case SOURCE_TYPE_NETWORK:
          return getNetworkFetchToEncodedMemoryPrefetchSequence();
        case SOURCE_TYPE_LOCAL_VIDEO_FILE:
        case SOURCE_TYPE_LOCAL_IMAGE_FILE:
          return getLocalFileFetchToEncodedMemoryPrefetchSequence();
        default:
          final Uri uri = imageRequest.getSourceUri();
          throw new IllegalArgumentException(
              "Unsupported uri scheme for encoded image fetch! Uri is: "
                  + getShortenedUriString(uri));
      }
    }