public funtion pageTest()
{
  return $this->renderPartial('testPage', array() , true);
}

return $this->api->renderTwig( dirname(__FILE__) . '/views/pageTest.twig', [ "time" => time()]);

<?php
class ShowAnswers extends PluginBase {
  static protected $description = 'Show answers';
  static protected $name = 'ShowAnswers';
 
  public function init()
  {
    $this->subscribe('newDirectRequest');
  }
 
  public function newDirectRequest()
  {
    $this->api->createUrl('plugins/direct', array('plugin' => 'ShowAnswers', 'function' => 'action'));
  }
 
  public function action()
  {
    echo "We've started!";
  }
}

limesurvey/index.php/plugins/direct/plugin/ShowAnswers