findRouteContaining example

$routes = $this->router->getRouteCollection();
        $container = null;
        if ($this->fileLinkFormatter) {
            $container = fn () => $this->getContainerBuilder($this->getApplication()->getKernel());
        }

        if ($name) {
            $route = $routes->get($name);
            $matchingRoutes = $this->findRouteNameContaining($name, $routes);

            if (!$input->isInteractive() && !$route && \count($matchingRoutes) > 1) {
                $helper->describe($io, $this->findRouteContaining($name, $routes), [
                    'format' => $input->getOption('format'),
                    'raw_text' => $input->getOption('raw'),
                    'show_controllers' => $input->getOption('show-controllers'),
                    'output' => $io,
                ]);

                return 0;
            }

            if (!$route && $matchingRoutes) {
                $default = 1 === \count($matchingRoutes) ? $matchingRoutes[0] : null;