What is Route groups in Slim Framework?

Slim Framework - Interview Questions

To help organize routes into logical groups, the Slim\App also provides a group() method. Each group’s route pattern is prepended to the routes or groups contained within it, and any placeholder arguments in the group pattern are ultimately made available to the nested routes:

use Slim\Routing\RouteCollectorProxy;
// ...

$app->group('/users/{id:[0-9]+}', function (RouteCollectorProxy $group) {
    $group->map(['GET', 'DELETE', 'PATCH', 'PUT'], '', function ($request, $response, array $args) {
        // Find, delete, patch or replace user identified by $args['id']
        // ...
        
        return $response;
    })->setName('user');
    
    $group->get('/reset-password', function ($request, $response, array $args) {
        // Route for /users/{id:[0-9]+}/reset-password
        // Reset the password for user identified by $args['id']
        // ...
        
        return $response;
    })->setName('user-password-reset');
});