Formatting in XML::Twig->print()

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    <PrimaryServers>
        <Server Name="Old_1"/>
        <Server Name="Old_2"/>
    </PrimaryServers>

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my $ps = $sc->first_child('PrimaryServers');
$ps->cut_children;
$ps->insert_new_elt("Server")->set_att('Name', "New_1");
$ps->insert_new_elt("Server")->set_att('Name', "New_2");

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<PrimaryServers><Server Name="New_2"/><Server Name="New_1"/></PrimaryS
+ervers>

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<PrimaryServers>
    <Server Name="New_2"/>
    <Server Name="New_1"/>
</PrimaryServers>

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