code: def create_cluster_meta(cluster_groups):
      
      meta = ClusterMeta()
      meta.add_field('group')
  
      cluster_groups = cluster_groups or {}
      data = {c: {'group': v} for c, v in cluster_groups.items()}
      meta.from_dict(data)
  
      return meta
docs: Return a ClusterMeta instance with cluster group support.