docs: private int increment(IGeoPoint iGeoPoint, Map<BoundingBox, Integer> heatmap) {
  
          Iterator<Map.Entry<BoundingBox, Integer>> iterator = heatmap.entrySet().iterator();
          while (iterator.hasNext()) {
              Map.Entry<BoundingBox, Integer> next = iterator.next();
              if (next.getKey().contains(iGeoPoint)) {
                  int newval = next.getValue() + 1;
                  heatmap.put(next.getKey(), newval);
                  return newval;
              }
          }
          return 0;
      }