text: <?php
  /**
   * Copyright © Magento, Inc. All rights reserved.
   * See COPYING.txt for license details.
   */
  namespace Magento\Email\Model\Design\Backend;
  
  use Magento\Theme\Model\Design\Backend\Logo as DesignLogo;
  
  class Logo extends DesignLogo
  {
      /**
       * The tail part of directory path for uploading
       */
      const UPLOAD_DIR = 'email/logo';
  
      /**
       * Upload max file size in kilobytes
       *
       * @var int
       */
      protected $maxFileSize = 2048;
  
      /**
       * Getter for allowed extensions of uploaded files
       *
       * @return string[]
       */
      public function getAllowedExtensions()
      {
          return ['jpg', 'jpeg', 'gif', 'png'];
      }
  }
  