<?php
  
  namespace Sabre\CardDAV\Backend;
  
  /**
   * CardDAV abstract Backend
   *
   * This class serves as a base-class for addressbook backends
   *
   * This class doesn't do much, but it was added for consistency.
   *
   * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
   * @author Evert Pot (http://evertpot.com/)
   * @license http://sabre.io/license/ Modified BSD License
   */
  abstract class AbstractBackend implements BackendInterface {
  
  }