let doc = {
    root = {
        ns = {
            prefix = "myns",
            uri = "http://example.com",
        },
        name = "top",
        attrs = {id = "foo"},
        children = [
            {
                ns = "http://example.org/",
                name = "child1",
                attrs = { attr1 = "value1", attr2 = "value2"},
                children = [
                    "inner text node",
                    {
                        name = "myns:grandchild",
                        children = [
                            {
                                text = "Another text node",
                            },
                        ],
                    },
                ],
            },
        ],
    },
};

out xml doc;