code: public function hasToolbar()
      {
          $fileSkeleton = '/Resources/views/Editor/Toolbar/_toolbar_%s_buttons.html.twig';
          return file_exists($this->pluginDir . sprintf($fileSkeleton, 'left')) || file_exists($this->pluginDir . sprintf($fileSkeleton, 'right'));
      }
docs: Returns true when the plugin has a toolbar
  
  @return bool