@Override
    protected ParcelFileDescriptor loadResource(AssetManager assetManager, String path) throws IOException {
        return assetManager.openFd(path).getParcelFileDescriptor();
    }
Fetches an {@link ParcelFileDescriptor} for an asset path.
core/src/main/java/com/bumptech/glide/load/data/FileDescriptorAssetPathFetcher.java