Laravel API Resources Transformation

php artisan make:resource UserResource

class UserResource extends JsonResource
{
    public function toArray($request)
    {
        return [
            'id' => $this->id,
            'name' => $this->name,
            'email' => $this->email,
            'posts' => PostResource::collection($this->whenLoaded('posts')),
        ];
    }
}

return new UserResource($user);
return UserResource::collection($users);

return (new UserResource($user))->additional([
    'meta' => ['version' => '1.0'],
]);