public function loadProcessorPlugins(&$values, $item, $entity_type) {
    $manager = \Drupal::service('plugin.manager.import_processor');
    $import_processors = $manager->getDefinitions();
    foreach ($import_processors as $plugin_id => $import_processor) {
      if ($import_processor['type'] == $entity_type . ':' . $item['type']) {
        /** @var \Drupal\govcms8_default_content\ImportProcessorBase $processor */
        $processor = $manager->createInstance($plugin_id);
        $processor->setItem($item);
        $processor->process($values);
      }
    }
  }