Permissions.php

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<?php
namespace Magento\Backend\Block\Cache;

use Magento\Framework\AuthorizationInterface;
use Magento\Framework\View\Element\Block\ArgumentInterface;

class Permissions implements ArgumentInterface
{
    private $authorization;

    public function __construct(AuthorizationInterface $authorization)
    {
        $this->authorization = $authorization;
    }

    public function hasAccessToFlushCatalogImages()
    {
        return $this->authorization->isAllowed('Magento_Backend::flush_catalog_images');
    }
    public function hasAccessToFlushJsCss()
    {
        return $this->authorization->isAllowed('Magento_Backend::flush_js_css');
    }
    public function hasAccessToFlushStaticFiles()
    {
        return $this->authorization->isAllowed('Magento_Backend::flush_static_files');
    }
    public function hasAccessToAdditionalActions()
    {
        return ($this->hasAccessToFlushCatalogImages()
                || $this->hasAccessToFlushJsCss()
                || $this->hasAccessToFlushStaticFiles());
    }
}