<?php

namespace PhpOffice\PhpSpreadsheet\Writer;

/**
 *  Copyright (c) 2006 - 2015 PhpSpreadsheet.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 *  @category   PhpSpreadsheet
 *
 *  @copyright  Copyright (c) 2006 - 2015 PhpSpreadsheet (https://github.com/PHPOffice/PhpSpreadsheet)
 *  @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 */
interface IWriter
{
    /**
     * Save PhpSpreadsheet to file.
     *
     * @param string $pFilename Name of the file to save
     *
     * @throws \PhpOffice\PhpSpreadsheet\Writer\Exception
     */
    public function save($pFilename = null);
}
