private boolean isExcluded(final Object modelObject) {
   final Coordinates coords = modelUtil.getCoordinates(modelObject);
   for (final Coordinates excludedCoordinate : excludedCoordinates) {
     if (excludedCoordinate.matches(coords)) {
       return true;
     }
   }
   return false;
 }
 public void setExcludedCoordinates(final Set<String> coordinates) {
   excludedCoordinates.clear();
   for (final String coordinate : coordinates) {
     excludedCoordinates.add(Coordinates.parse(coordinate));
   }
 }