>           assertTrue(instanceApi.list().size() >= 2);
> -         for (Instance instance : instancesToDelete.get(zone)) {
> -            DatabaseApi databaseApi = 
> api.getDatabaseApiForZoneAndInstance(zone, instance.getId());
> +         for (Instance instance : instancesToDelete.get(region)) {
> +            DatabaseApi databaseApi = api.getDatabaseApi(region, 
> instance.getId());
>              if (!instance.getName().contains("database_testing"))
>                 continue;
>              assertTrue(databaseApi.list().size() >= 1);

> If you didn't see any issues (can't really imagine why you would see any), I 
> say yes to all of that.

+1, unsurprisingly ;-) I think it should indeed be recommended because 
"isEmpty" can be a simple check (basically !hasNext), but calculating the size 
can be much more expensive.

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