UserRouteProvider.php

<?php

namespace Drupal\user\Entity;

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Entity\Routing\EntityRouteProviderInterface;
use Symfony\Component\Routing\Route;
use Symfony\Component\Routing\RouteCollection;

/**
 * Provides routes for the user entity.
 */
class UserRouteProvider implements EntityRouteProviderInterface {
    
    /**
     * {@inheritdoc}
     */
    public function getRoutes(EntityTypeInterface $entity_type) {
        $route_collection = new RouteCollection();
        $route = (new Route('/user/{user}'))->setDefaults([
            '_entity_view' => 'user.full',
            '_title_callback' => 'Drupal\\user\\Controller\\UserController::userTitle',
        ])
            ->setRequirement('user', '\\d+')
            ->setRequirement('_entity_access', 'user.view');
        $route_collection->add('entity.user.canonical', $route);
        $route = (new Route('/user/{user}/edit'))->setDefaults([
            '_entity_form' => 'user.default',
            '_title_callback' => 'Drupal\\user\\Controller\\UserController::userTitle',
        ])
            ->setOption('_admin_route', TRUE)
            ->setRequirement('user', '\\d+')
            ->setRequirement('_entity_access', 'user.update');
        $route_collection->add('entity.user.edit_form', $route);
        $route = (new Route('/user/{user}/cancel'))->setDefaults([
            '_title' => 'Cancel account',
            '_entity_form' => 'user.cancel',
        ])
            ->setOption('_admin_route', TRUE)
            ->setRequirement('user', '\\d+')
            ->setRequirement('_entity_access', 'user.delete');
        $route_collection->add('entity.user.cancel_form', $route);
        return $route_collection;
    }

}