getAttributeNS method
Implementation
@pragma('dart2js:tryInline')
String? getAttributeNS(String? namespaceURI, String name) {
// TODO(41258): Delete this assertion after forcing strong mode.
// Protect [name] against string conversion to "null" or "undefined".
// [namespaceURI] does not need protecting, both `null` and `undefined` map to `null`.
assert(name != null, 'Attribute name cannot be null');
return _getAttributeNS(namespaceURI, name);
}