code: public function renderPager()
      {
          $pagination = $this->dataProvider->getPagination();
          if ($pagination === false || $this->dataProvider->getCount() <= 0) {
              return '';
          }
          /* @var $class LinkPager */
          $pager = $this->pager;
          $class = ArrayHelper::remove($pager, 'class', LinkPager::className());
          $pager['pagination'] = $pagination;
          $pager['view'] = $this->getView();
  
          return $class::widget($pager);
      }
docs: Renders the pager.
  @return string the rendering result