code: func WithPagination(opts PaginationOptions) ReqOption {
  	return func(opt *reqOption) {
  		opt.params.Set("page", strconv.Itoa(opts.Page))
  		opt.params.Set("per_page", strconv.Itoa(opts.PerPage))
  	}
  }
docs: // WithPagination configures the pagination for a response.