docs: private void countCoordinates(int xCoord, int yCoord,
  			ItemDocument itemDocument) {
  
  		for (String siteKey : itemDocument.getSiteLinks().keySet()) {
  			Integer count = this.siteCounts.get(siteKey);
  			if (count == null) {
  				this.siteCounts.put(siteKey, 1);
  			} else {
  				this.siteCounts.put(siteKey, count + 1);
  			}
  		}
  
  		for (ValueMap vm : this.valueMaps) {
  			vm.countCoordinates(xCoord, yCoord, itemDocument);
  		}
  	}