result = (getStudentGroup().equals(((IStudentGroupAttend) arg0).getStudentGroup())) && (getAttend().equals(((IStudentGroupAttend) arg0).getAttend()));
result = getIdInternal().equals(((IStudentGroupAttend) arg0).getIdInternal());
    public boolean equals(Object arg0) {        boolean result = false;        if (arg0 instanceof IStudentGroupAttend) {            result = (getStudentGroup().equals(((IStudentGroupAttend) arg0).getStudentGroup()))                    && (getAttend().equals(((IStudentGroupAttend) arg0).getAttend()));        }        return result;    }