docs: public static Map<Integer, Map<Integer, DRSiteDrIdTracker>> dejsonifyClusterTrackers(final String jsonData, boolean resetLastReceivedLogIds)
      throws JSONException
      {
          Map<Integer, Map<Integer, DRSiteDrIdTracker>> producerTrackers = new HashMap<>();
  
          JSONObject clusterData = new JSONObject(jsonData);
          final JSONObject trackers = clusterData.getJSONObject("trackers");
          Iterator<String> clusterIdKeys = trackers.keys();
          while (clusterIdKeys.hasNext()) {
              final String clusterIdStr = clusterIdKeys.next();
              final int clusterId = Integer.parseInt(clusterIdStr);
              final JSONObject trackerData = trackers.getJSONObject(clusterIdStr);
              Iterator<String> srcPidKeys = trackerData.keys();
              while (srcPidKeys.hasNext()) {
                  final String srcPidStr = srcPidKeys.next();
                  final int srcPid = Integer.valueOf(srcPidStr);
                  final JSONObject ids = trackerData.getJSONObject(srcPidStr);
                  final DRSiteDrIdTracker tracker = new DRSiteDrIdTracker(ids, resetLastReceivedLogIds);
  
                  Map<Integer, DRSiteDrIdTracker> clusterTrackers = producerTrackers.computeIfAbsent(clusterId, k -> new HashMap<>());
                  clusterTrackers.put(srcPid, tracker);
              }
          }
  
          return producerTrackers;
      }