Behat step for Drupal batch-api support

gistfile1.php

<?php
/**
   * @Given /^I follow meta refresh$/
   */
  public function iFollowMetaRefresh() {
    while ($refresh = $this->getMainContext()->getSession()->getPage()->find('css', 'meta[http-equiv="Refresh"]')) {
      $content = $refresh->getAttribute('content');
      $url = str_replace('0; URL=', '', $content);
      $this->getMainContext()->getSession()->visit($url);
    }
  }
?>

Every time when you call find in element you should remember that this method can return null