code: @Nullable protected Cluster getCluster(final String clusterUUID) throws FlexiantException {
          return this.getResource(clusterUUID, ResourceType.CLUSTER, Cluster.class);
      }
docs: Loads the cluster with the given uuid.
  
  @param clusterUUID the uuid of the cluster.
  @return the cluster identified by the uuid or null.
  @throws FlexiantException