public function runStep(XenForo_ControllerAdmin_Abstract $controller = null, XenForo_ImportSession $session, $step, $start, array $options = array())
{
if (!$step || !method_exists($this, 'step' . $step)) {
throw new XenForo_Exception('Invalid step ' . $step);
}
ignore_user_abort(true);
$this->_session = $session;
$this->_controller = $controller;
$this->_bootstrapImporter($session->getConfig());
$steps = $this->getSteps();
if (isset($steps[$step])) {
if (!$this->_importModel->canRunStep($step, $steps, $session->getRunSteps())) {
throw new XenForo_Exception('Step ' . $step . ' cannot be run.');
}
}
return $this->{'step' . $step}($start, $options);
}
