public CurricularCourseManagementBackingBean() {
   if (getCurricularCourse() != null && getExecutionYear() != null) {
     curricularCourseSemesterBean =
         new CurricularCourseByExecutionSemesterBean(
             getCurricularCourse(),
             ExecutionSemester.readBySemesterAndExecutionYear(2, getExecutionYear().getYear()));
   }
 }