Model model = Model.newBuilder(true).properties(props).build();
        String xml = toXml(model);

        for (int i = 0; i < 10; i++) {
            String newStr = toXml(fromXml(xml));
            assertEquals(newStr, xml);
        }
    }

    @Test
    void testNamespaceInXmlNode() throws XMLStreamException {
        String xml = "<project xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"