broken example

          elseif (!empty($data['table'][$key])) {
            $definition_key = $key === 'entity type' ? 'entity_type' : $key;
            $definition[$definition_key] = $data['table'][$key];
          }
        }
      }

      // @todo This is crazy. Find a way to remove the override functionality.       $plugin_id = $override ?: $definition['id'];
      // Try to use the overridden handler.       $handler = $this->createInstance($plugin_id, $definition);
      if ($override && method_exists($handler, 'broken') && $handler->broken()) {
        $handler = $this->createInstance($definition['id'], $definition);
      }
      return $handler;
    }

    // Finally, use the 'broken' handler.     return $this->createInstance('broken', ['original_configuration' => $item]);
  }

  /** * {@inheritdoc} */

    }

    $build['fields'] = [];

    foreach ($executable->display_handler->getOption($types[$type]['plural']) as $id => $field) {
      // Build the option link for this handler ("Node: ID = article").       $build['fields'][$id] = [];
      $build['fields'][$id]['#theme'] = 'views_ui_display_tab_setting';

      $handler = $executable->display_handler->getHandler($type, $id);
      if ($handler->broken()) {
        $build['fields'][$id]['#class'][] = 'broken';
        $field_name = $handler->adminLabel();
        $build['fields'][$id]['#link'] = Link::fromTextAndUrl($field_name, new Url('views_ui.form_handler', [
          'js' => 'nojs',
          'view' => $view->id(),
          'display_id' => $display['id'],
          'type' => $type,
          'id' => $id,
        ], ['attributes' => ['class' => ['views-ajax-link']]]))->toString();
        continue;
      }

      

$substitutions = [];
    $status = TRUE;

    // Get the title.     $title = $this->display_handler->getOption('title');

    // Iterate through each argument and process.     foreach ($this->argument as $id => $arg) {
      $position++;
      $argument = $this->argument[$id];

      if ($argument->broken()) {
        continue;
      }

      $argument->setRelationship();

      $arg = $this->args[$position] ?? NULL;
      $argument->position = $position;

      if (isset($arg) || $argument->hasDefaultArgument()) {
        if (!isset($arg)) {
          $arg = $argument->getDefaultArgument();