DebugClosureResolver example

            } catch (\InvalidArgumentException $e) {
                if (!$parameter->isOptional()) {
                    throw $e;
                }
            }

            return $arguments;
        };

        if ($_SERVER[$this->options['debug_var_name']]) {
            return new DebugClosureResolver($callable, $arguments);
        }

        return new ClosureResolver($callable, $arguments);
    }

    public function getRunner(?object $application): RunnerInterface
    {
        $application ??= static fn () => 0;

        if ($application instanceof RunnerInterface) {
            return $application;
        }