private void searchForEnrollmentInExtraCurricularCourseAndDeleteIt(IEnrolment oldEnrollment,
private void searchForEnrollmentInExtraCurricularCourseAndDeleteIt(IEnrollment oldEnrollment,
	private void searchForEnrollmentInExtraCurricularCourseAndDeleteIt(IEnrolment oldEnrollment,		IStudentCurricularPlan toStudentCurricularPlan) throws ExcepcaoPersistencia	{		ISuportePersistente persistenceDAO = SuportePersistenteOJB.getInstance();		IPersistentEnrolment enrollmentDAO = persistenceDAO.getIPersistentEnrolment();				IEnrolment enrollment = enrollmentDAO.readByStudentCurricularPlanAndCurricularCourseAndExecutionPeriod(			toStudentCurricularPlan, oldEnrollment.getCurricularCourse(), oldEnrollment.getExecutionPeriod());				if ( (enrollment != null) && (enrollment instanceof EnrolmentInExtraCurricularCourse) )		{			enrollmentDAO.deleteByOID(Enrolment.class, enrollment.getIdInternal());		}	}