try {
documentBuilder = factory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
throw new RuntimeException(e);
}
documentBuilder.setEntityResolver(new LiquibaseEntityResolver(this));
Document doc = documentBuilder.newDocument();
Element changeLogElement = doc.createElementNS(LiquibaseSerializable.STANDARD_CHANGELOG_NAMESPACE, "databaseChangeLog");
changeLogElement.setAttribute("xmlns", LiquibaseSerializable.STANDARD_CHANGELOG_NAMESPACE);