code: public function handle(GetPasteButtonEvent $event)
      {
          $model = $event->getModel();
          if (('tl_metamodel_filtersetting' !== $model->getProviderName())) {
              return;
          }
  
          $environment = $event->getEnvironment();
          $model       = $event->getModel();
          $clipboard   = $environment->getClipboard();
  
          $filter = Filter::create()->andModelIs(ModelId::fromModel($model))->andActionIs(ItemInterface::CUT);
          // Disable all buttons if there is a circular reference.
          if ($event->isCircularReference() || !$clipboard->isEmpty($filter)) {
              $event
                  ->setPasteAfterDisabled(true)
                  ->setPasteIntoDisabled(true);
  
              return;
          }
          $factory = $this->filterFactory->getTypeFactory($model->getProperty('type'));
  
          // If setting does not support children, omit them.
          if ($model->getId() && !($factory && $factory->isNestedType())) {
              $event->setPasteIntoDisabled(true);
          }
      }
docs: Generate the paste button.
  
  @param GetPasteButtonEvent $event The event.
  
  @return void