Helpers::improveException fatal error if class name is "parent"

[MartkCz]

When I have following wrong code:

$this->onAnchor[] = [$this, 'init'];

private function init(): void

PHP fatal error printed: Fatal error: Uncaught TypeError: get_class_methods(): Argument #1 ($object_or_class) must be an object or a valid class name, string given in /var/www/html/vendor/tracy/tracy/src/Tracy/Helpers.php on line 187 in https://github.com/nette/tracy/blob/master/src/Tracy/Helpers.php#L187

Because of original message: Call to undefined method parent::init(). "parent" is not valid class name