namespace Cron\Test\Cron; class Example {       protected $  customerSession;          /**          * Construct          *          * @param \Magento\Framework\View\Element\Template\Context $  context          * @param \Magento\Customer\Model\Session $  customerSession          * @param array $  data          */         public function __construct(             \Magento\Framework\View\Element\Template\Context $  context,             \Magento\Customer\Model\Session $  customerSession,             array $  data = []         ) {             parent::__construct($  context, $  data);              $  this->customerSession = $  customerSession;         }          public function customer()         {             return $  this->customerSession->getCustomer()->getId();          }         public function execute()        {              $  suser_id= $  this>customer();            $  this->_resources = \Magento\Framework\App\ObjectManager::getInstance()->get('Magento\Framework\App\ResourceConnection');           $  connection= $  this->_resources->getConnection();         $  sql = "UPDATE `total_cashback` SET is_active= 150 WHERE user_id = '$  suser_id' ";            //$  sql = "UPDATE `wallet_discounts` SET is_active = 1 WHERE customer_id = '$  customerId' ";           $  connection->query($  sql);        }