CollectionFactory.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Framework\Mview\View\State;

class CollectionFactory extends \Magento\Framework\Mview\View\AbstractFactory
{
    /**
     * Instance name
     */
    const INSTANCE_NAME = \Magento\Framework\Mview\View\State\CollectionInterface::class;
}