> + provider = "digitalocean";
> + }
> +
> + protected void initializeImageSizeAndRegion() {
> + sizes = sortedSizes().sortedCopy(api.getSizesApi().list());
> + regions = api.getRegionApi().list();
> + images = newArrayList(filter(api.getImageApi().list(), new
> Predicate<Image>() {
> + @Override
> + public boolean apply(Image input) {
> + return input.isPublicImage();
> + }
> + }));
> +
> + assertTrue(sizes.size() > 1, "There must be at least two sizes");
> + assertTrue(regions.size() > 1, "There must be at least two regions");
> + assertTrue(images.size() > 0, "Image list should not be empty");
`!images.isEmpty()`?
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