18 class Grid extends \Magento\Backend\Block\Widget\Grid
33 \
Magento\Backend\Helper\Data $backendHelper,
38 parent::__construct($context, $backendHelper,
$data);
54 return parent::_prepareCollection();
__construct(\Magento\Backend\Block\Template\Context $context, \Magento\Backend\Helper\Data $backendHelper, \Magento\Newsletter\Model\QueueFactory $queueFactory, array $data=[])