' . $this->t('About') . ''; $output .= '

'; $output .= $this->t('The Migrate module provides a framework for migrating data, usually from an external source into your site. It does not provide a user interface. For more information, see the online documentation for the Migrate module.', [':migrate' => 'https://www.drupal.org/documentation/modules/migrate']); $output .= '

'; return $output; } return NULL; } }