@Override
        public ModelLoader<File, ParcelFileDescriptor> build(Context context, GenericLoaderFactory factories) {
            return new FileDescriptorFileLoader(factories.buildModelLoader(Uri.class, ParcelFileDescriptor.class));
        }
The default {@link ModelLoaderFactory} for
{@link FileDescriptorFileLoader}s.
core/src/main/java/com/bumptech/glide/load/model/file_descriptor/FileDescriptorFileLoader.java