/** * @param \Magento\Backend\Block\Context $context * @param \Magento\Backend\Block\Widget\Grid\Column\Renderer\Options\Converter $converter * @param \Magento\Framework\Json\EncoderInterface $jsonEncoder * @param array $data */ public function __construct(\Magento\Backend\Block\Context $context, \Magento\Backend\Block\Widget\Grid\Column\Renderer\Options\Converter $converter, \Magento\Framework\Json\EncoderInterface $jsonEncoder, array $data = array()) { $this->_jsonEncoder = $jsonEncoder; parent::__construct($context, $converter, $data); }