docs: @Override
  	public void processPropertyDocument(PropertyDocument propertyDocument) {
  		this.countProperties++;
  
  		// For testing; disable when no longer needed:
  		if (this.countProperties < 10) {
  			System.out.println(propertyDocument);
  		} else if (this.countItems == 10) {
  			System.out
  					.println("*** I won't print any further properties.\n"
  							+ "*** Otherwise you would see only properties and no items.\n"
  							+ "*** Maybe remove this debug output altogether.");
  		}
  	}