/**
  * @param \Magento\Framework\Event\Observer $observer
  *
  * @return $this
  */
 public function controllerActionPredispatch(\Magento\Framework\Event\Observer $observer)
 {
     $this->_helper->log($observer->getEvent()->getName(), true);
     if ($this->_helper->shouldShowTemplatePathHints()) {
         $this->_mutableConfig->setValue(\MagePsycho\Easypathhints\Helper\Data::XML_PATH_DEV_DEBUG_TEMPLATE_HINTS, 1, \Magento\Store\Model\ScopeInterface::SCOPE_STORE);
         $this->_mutableConfig->setValue(\MagePsycho\Easypathhints\Helper\Data::XML_PATH_DEV_DEBUG_TEMPLATE_HINTS_BLOCKS, 1, \Magento\Store\Model\ScopeInterface::SCOPE_STORE);
         if ($this->_helper->getShowProfiler()) {
             $_SERVER['MAGE_PROFILER'] = 'html';
         }
     }
     return $this;
 }