Laravel5.5 API 资源 怎么获取分页信息？

https://learnku.com/docs/laravel/5.5/eloquent-resources#分页
在文档所说的通过分页信息在UserCollection 中需要怎么获取啊？哪位大神给指点一下。谢谢

Route::get('/users', function () {
    return new UserCollection(User::paginate(2));  
});

namespace App\Http\Resources\User;

use Illuminate\Http\Resources\Json\ResourceCollection;

class UserCollection extends ResourceCollection
{
    /**
     * 
     */
    public function toArray($request)
    {
        return [
           'data'=>UserResource::collection($this->collection),
            "links"=>[          //这里的分页信息需要怎么获取啊？
                "first"=> '',
                "last"=> "http://example.com/pagination?page=1",
                "prev"=> null,
                "next"=> null
            ],
            "meta"=>[    //这里的分页信息需要怎么获取啊？
                "current_page"=> 1,  //怎么获取当前是第几页？
                "from"=> 1,
                "last_page"=> 1,
                "path"=> "http://example.com/pagination",
                "per_page"=> 15,
                "to"=> 10,
                "total"=> 10
            ]
        ];
    }
}