> + public Set<String> getIso3166Codes() {
> + return ImmutableSet.<String>of();
> + }
> +
> + @Override
> + public String getId() {
> + return "id";
> + }
> +
> + @Override
> + public String getDescription() {
> + return "description";
> + }
> + };
> +
> + public void testInstanceWithNullGroup() {
Have a look at the
[DropletToNodeMetadataTest](https://github.com/jclouds/jclouds-labs/blob/master/digitalocean/src/test/java/org/jclouds/digitalocean/compute/functions/DropletToNodeMetadataTest.java)
class, which is the test used in the DigitalOcean provider. It tests pretty
much the same thing, and might give you some idea of a cleaner setup.
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