public function execute(BlockContextInterface $blockContext, Response $response = null)
{
$criteria = array();
return $this->renderResponse($blockContext->getTemplate(), array('context' => $blockContext, 'settings' => $blockContext->getSettings(), 'block' => $blockContext->getBlock(), 'customers' => $this->manager->findBy($criteria, array('createdAt' => 'DESC'), $blockContext->getSetting('number')), 'admin_pool' => $this->adminPool), $response);
}