* @param AuthenticationRequest[] $requests
* @param array $fieldInfo Field information array (union of all
* AuthenticationRequest::getFieldInfo() responses).
- * @param array $formDescriptor HTMLForm descriptor. The special key 'weight' can be set to
+ * @param array &$formDescriptor HTMLForm descriptor. The special key 'weight' can be set to
* change the order of the fields.
* @param string $action Authentication type (one of the AuthManager::ACTION_* constants)
* @return bool
* Sort the fields of a form descriptor by their 'weight' property. (Fields with higher weight
* are shown closer to the bottom; weight defaults to 0. Negative weight is allowed.)
* Keep order if weights are equal.
- * @param array $formDescriptor
+ * @param array &$formDescriptor
* @return array
*/
protected static function sortFormDescriptorFields( array &$formDescriptor ) {