* API Call: <tt>GET /dataservice/cas-cluster</tt>
*
* @return the list of CAS clusters.
*/
public List<CasClusterInfoRep> getClusters() {
CasClusterListRep list = client.get(CasClusterListRep.class, CAS_CLUSTERS_URL);
return ResourceUtils.defaultList(list != null ? list.getCasClusters() : null);
}