).getVolumeAttachmentExtensionForZone("az-1.region-a.geo-1").get();
Set<? extends VolumeAttachment> attachments = api.listAttachmentsOnServer("instance-1").toSet();
assertEquals(attachments, ImmutableSet.of(testAttachment()));
// double-check individual fields
VolumeAttachment attachment = Iterables.getOnlyElement(attachments);
assertEquals(attachment.getDevice(), "/dev/vdc");
assertEquals(attachment.getServerId(), "b4785058-cb80-491b-baa3-e4ee6546450e");
assertEquals(attachment.getId(), "1");
assertEquals(attachment.getVolumeId(), "1");
}