in src/ConfigParser/ConfigParser.js [503:510]
function getCordovaNamespacePrefix (doc) {
const attrs = doc.getroot().attrib;
const nsAttr = Object.keys(attrs).find(key =>
key.startsWith('xmlns:') && attrs[key] === CDV_XMLNS_URI
);
return nsAttr ? nsAttr.split(':')[1] : 'cdv';
}