$app = new Slim\App(); $app->get('/hello/{name}', function ($request, $response, $args) { $name = $args['name']; $response->getBody()->write("Hello, $name!"); return $response; }); $routeInfo = $app->getContainer()->get('router')->dispatch($request); if ($routeInfo[0] === \Slim\Http\Router::FOUND) { // Get the action associated with this route $action = $routeInfo[1]['action']; // Invoke the action and pass in any required parameters $response = $action($request, $response, $routeInfo[2]); } else { // Handle 404 errors $response->getBody()->write('Not found'); } echo $response->getBody();In this example, the GetAction method is called indirectly through the `dispatch` method of the Slim router. The `dispatch` method returns an array containing information about the matched route, including the associated action. This code retrieves the action associated with a route that responds to requests for `/hello/{name}`, which expects a "name" parameter in the URL. The action is a closure that takes the request, response, and arguments for the route as parameters, and writes a greeting message to the response body. It is difficult to determine the package library solely from this example code, but the fact that it includes the `dispatch` method suggests that it is part of a larger routing framework, rather than a standalone router implementation.