docs: private void allClustersEqual(final List<String> clusterUrls) {
          Validate.notEmpty(clusterUrls, "clusterUrls cannot be null");
          // If only one clusterUrl return immediately
          if (clusterUrls.size() == 1)
              return;
          AdminClient adminClientLhs = adminClientPerCluster.get(clusterUrls.get(0));
          Cluster clusterLhs = adminClientLhs.getAdminClientCluster();
          for (int index = 1; index < clusterUrls.size(); index++) {
              AdminClient adminClientRhs = adminClientPerCluster.get(clusterUrls.get(index));
              Cluster clusterRhs = adminClientRhs.getAdminClientCluster();
              if (!areTwoClustersEqual(clusterLhs, clusterRhs))
                  throw new VoldemortException("Cluster " + clusterLhs.getName()
                                               + " is not the same as " + clusterRhs.getName());
          }
      }