String assetGroup, int widthHint) throws IOException {
VariantBuilder variantBuilder =
factory.createVariantBuilder(VariantType.IMAGE);
GenericImageSelectionBuilder generic =
factory.createGenericImageSelectionBuilder();
generic.setWidthHint(widthHint);
variantBuilder.setSelectionBuilder(generic);
ImageMetaDataBuilder image = createImageMetaData(imageFile);
variantBuilder.setMetaDataBuilder(image);