Doctrine entity as API resource

// src/App/Entity.php
namespace App\Entity;
use ApiPlatform\Doctrine\Orm\Filter\OrderFilter;
use ApiPlatform\Metadata\ApiFilter;
use ApiPlatform\Metadata\ApiResource;
use Doctrine\ORM\Mapping as ORM;

#[ApiResource]
#[ApiFilter(OrderFilter::class)]
#[ORM\Entity]
class Book
{
    #[ORM\Id, ORM\Column, ORM\GeneratedValue]
    private ?int $id = null;
    #[ORM\Column]
    public ?string $title = null;
    public function getId(): ?int
    {
        return $this->id;
    }
}

// src/App/Playground.php
namespace App\Playground;
use Symfony\Component\HttpFoundation\Request;
function request(): Request
{

    return Request::create('/books?order[id]=desc', 'GET');
    return Request::create('/books/1', 'GET');
    return Request::create(uri: '/books', method: 'POST', server: ['CONTENT_TYPE' => 'application/ld+json'], content: json_encode(['id' => 1, 'title' => 'API Platform rocks.']));
}

// src/DoctrineMigrations.php
namespace DoctrineMigrations;
use Doctrine\DBAL\Schema\Schema;
use Doctrine\Migrations\AbstractMigration;
final class Migration extends AbstractMigration
{
    public function up(Schema $schema): void
    {
        $this->addSql('CREATE TABLE book (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, title VARCHAR(255) NOT NULL)');
    }
}

// src/App/Fixtures.php
namespace App\Fixtures;
use App\Entity\Book;
use Doctrine\Bundle\FixturesBundle\Fixture;
use Doctrine\Persistence\ObjectManager;
use function Zenstruck\Foundry\anonymous;
use function Zenstruck\Foundry\faker;
use function Zenstruck\Foundry\repository;
final class BookFixtures extends Fixture
{
    public function load(ObjectManager $manager): void
    {
        $bookFactory = anonymous(Book::class);
        if (repository(Book::class)->count()) {
            return;
        }
        $bookFactory->many(10)->create(fn () => [
            'title' => faker()->name(),
        ]
        );
    }
}

// src/App/Tests.php
namespace App\Tests;
use ApiPlatform\Playground\Test\TestGuideTrait;
use ApiPlatform\Symfony\Bundle\Test\ApiTestCase;
final class BookTest extends ApiTestCase
{
    use TestGuideTrait;
    public function testGet(): void
    {
        static::createClient()->request('GET', '/books.jsonld');
        $this->assertResponseIsSuccessful();
    }
    public function testGetOne(): void
    {
        static::createClient()->request('GET', '/books/1.jsonld');
        $this->assertResponseIsSuccessful();
    }
}