Detailed.php

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<?php
namespace Magento\Review\Block\Rating\Entity;

class Detailed extends \Magento\Framework\View\Element\Template
{
    protected $_template = 'Magento_Review::detailed.phtml';

    protected $_ratingFactory;

    public function __construct(
        \Magento\Framework\View\Element\Template\Context $context,
        \Magento\Review\Model\RatingFactory $ratingFactory,
        array $data = []
    ) {
        $this->_ratingFactory = $ratingFactory;
        parent::__construct($context, $data);
    }

    protected function _toHtml()
    {
        $entityId = $this->_request->getParam('id');
        if (intval($entityId) <= 0) {
            return '';
        }

        $reviewsCount = $this->_ratingFactory->create()->getTotalReviews($entityId, true);
        if ($reviewsCount == 0) {
            #return __('Be the first to review this product');
            $this->setTemplate('Magento_Review::empty.phtml');
            return parent::_toHtml();
        }

        $ratingCollection = $this->_ratingFactory->create()->getResourceCollection()->addEntityFilter(
            'product' # TOFIX
        )->setPositionOrder()->setStoreFilter(
            $this->_storeManager->getStore()->getId()
        )->addRatingPerStoreName(
            $this->_storeManager->getStore()->getId()
        )->load();

        if ($entityId) {
            $ratingCollection->addEntitySummaryToItem($entityId, $this->_storeManager->getStore()->getId());
        }

        $this->assign('collection', $ratingCollection);
        return parent::_toHtml();
    }
}