public LETOptionalExclusiveEnrollmentRule() {
public LETOptionalExclusiveEnrollmentRule(IStudentCurricularPlan studentCurricularPlan, IExecutionPeriod executionPeriod) { this.studentCurricularPlan = studentCurricularPlan; this.executionPeriod = executionPeriod;
    public LETOptionalExclusiveEnrollmentRule() {    }