has static method
Gets the value of a attribute else a child element
Implementation
static bool has({required XmlElement node, required String tag}) {
try {
if (hasAttribute(node: node, tag: tag)) return true;
if (hasElement(node: node, tag: tag)) return true;
} catch (e) {
Log().exception(e,
caller: 'xml.dart => String get({XmlElement node, String tag})');
}
return false;
}