<Group>
    <name>java</name>
    <users>
        <users>
            <name>Alex</name>
            <age>22</age>
        </users>
        <users>
            <name>Olga</name>
            <age>23</age>
        </users>
        <users>
            <name>Maks</name>
            <age>25</age>
        </users>
    </users>
</Group>