Form form = new Form("form");
final ListChoice cepToAddList = new ListChoice("cepToAdd",
new PropertyModel(this, "cepToAdd"), cepDisponibles,
new CourseEnsemblePucesChoiceRenderer());
form.add(cepToAddList.setMaxRows(10).setNullValid(false).setEnabled(
course.isUtilisationPuces()));
final ListChoice cepToRemoveList = new ListChoice("cepToRemove",
new PropertyModel(this, "cepToRemove"), cepCourse,
new CourseEnsemblePucesChoiceRenderer());
form.add(cepToRemoveList.setMaxRows(10).setNullValid(false).setEnabled(
course.isUtilisationPuces()));
final Button addToCourseButton = new Button("addToCourse")
{