code: @SuppressWarnings("deprecation")
      @Deprecated
      @Nullable
      public ReplicaSetStatus getReplicaSetStatus() {
          ClusterDescription clusterDescription = getClusterDescription();
          return clusterDescription.getType() == REPLICA_SET && clusterDescription.getConnectionMode() == MULTIPLE
                 ? new ReplicaSetStatus(delegate.getCluster()) : null; // this is intended behavior in 2.x
      }
docs: Get the status of the replica set cluster.
  
  @return replica set status information