/**
  * @param string|null $template
  *
  * @return \Illuminate\View\View
  */
 public function render($template = null)
 {
     if (is_null($template)) {
         if (method_exists($this->section, 'getToolbarTemplate')) {
             $template = $this->section->getToolbarTemplate();
         } else {
             $template = 'datasource::section.toolbar';
         }
     }
     return view($template, ['section' => $this->section]);
 }