private static string ClusterToString(Cluster cluster)
 {
     var sb = new StringBuilder();
     sb.AppendFormat("\r\n\tResourceGroup: {0}\r\n", HDInsightManagementCLIHelpers.GetResourceGroupNameFromClusterId(cluster.Id));
     sb.AppendFormat("\t{0}\r\n", cluster.ToDisplayString().Replace("\n", "\n\t"));
     sb.AppendFormat("\tUserClusterTablePrefix: {0}\r\n", HDInsightManagementCLIHelpers.GetUserClusterTablePrefix(cluster));
     return sb.ToString();
 }