private String mostConnUsecase() {
    String s = "";
    int high = 0;

    for (UMLUsecase umlu : umlulist) {
      ArrayList<DiagramObject> rol = umlu.getRelatedObjects();
      if (rol.size() >= high) {
        int newHigh = 0;
        for (DiagramObject ro : rol) {
          if (ro.getClass() == UMLCRUD.class) {
            newHigh++;
          }
        }
        if (newHigh >= high) {
          if (newHigh > high) {
            high = newHigh;
            s = "" + umlu.getNaam();
          } else {
            s = s + ", " + umlu.getNaam();
          }
        }
      }
    }
    s = s + " (" + high + ")";
    return s;
  }