public StudentGroup(Integer groupNumber, IAttendsSet attendsSet, IShift shift) { super.setGroupNumber(groupNumber); super.setAttendsSet(attendsSet); super.setShift(shift);
public StudentGroup() {
    public StudentGroup(Integer groupNumber, IAttendsSet attendsSet, IShift shift) {        super.setGroupNumber(groupNumber);        super.setAttendsSet(attendsSet);        super.setShift(shift);    }