Cache.php

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<?php
namespace Magento\Backend\Controller\Adminhtml;

use Magento\Backend\App\Action;
use Magento\Framework\Exception\LocalizedException;

abstract class Cache extends Action
{
    const ADMIN_RESOURCE = 'Magento_Backend::cache';

    protected $_cacheTypeList;

    protected $_cacheState;

    protected $_cacheFrontendPool;

    protected $resultPageFactory;

    public function __construct(
        Action\Context $context,
        \Magento\Framework\App\Cache\TypeListInterface $cacheTypeList,
        \Magento\Framework\App\Cache\StateInterface $cacheState,
        \Magento\Framework\App\Cache\Frontend\Pool $cacheFrontendPool,
        \Magento\Framework\View\Result\PageFactory $resultPageFactory
    ) {
        parent::__construct($context);
        $this->_cacheTypeList = $cacheTypeList;
        $this->_cacheState = $cacheState;
        $this->_cacheFrontendPool = $cacheFrontendPool;
        $this->resultPageFactory = $resultPageFactory;
    }

    protected function _validateTypes(array $types)
    {
        if (empty($types)) {
            return;
        }
        $allTypes = array_keys($this->_cacheTypeList->getTypes());
        $invalidTypes = array_diff($types, $allTypes);
        if (count($invalidTypes) > 0) {
            throw new LocalizedException(__('These cache type(s) don\'t exist: %1', join(', ', $invalidTypes)));
        }
    }
}