<myns:main_elt xmlns:myns="http://myns"
                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                  xsi:schemaLocation="http://myns gmlas_typing_constraints_two_subst.xsd">
    <myns:foo>
        <myns:bar><myns:value>baz</myns:value></myns:bar>
    </myns:foo>
</myns:main_elt>
