code: public static Referenceable createClusterEntity(final org.apache.falcon.entity.v0.cluster.Cluster cluster) {
          LOG.info("Creating cluster Entity : {}", cluster.getName());
  
          Referenceable clusterRef = new Referenceable(FalconDataTypes.FALCON_CLUSTER.getName());
  
          clusterRef.set(AtlasClient.NAME, cluster.getName());
          clusterRef.set(AtlasClient.DESCRIPTION, cluster.getDescription());
          clusterRef.set(AtlasClient.REFERENCEABLE_ATTRIBUTE_NAME, cluster.getName());
  
          clusterRef.set(FalconBridge.COLO, cluster.getColo());
  
          if (cluster.getACL() != null) {
              clusterRef.set(AtlasClient.OWNER, cluster.getACL().getGroup());
          }
  
          if (StringUtils.isNotEmpty(cluster.getTags())) {
              clusterRef.set(FalconBridge.TAGS,
                      EventUtil.convertKeyValueStringToMap(cluster.getTags()));
          }
  
          return clusterRef;
      }
docs: Creates cluster entity
  
  @param cluster ClusterEntity
  @return cluster instance reference