如何使用PHP Webdriver for Selenium在Firefox 58++上下载文件

{
    "require": {
        "php-webdriver/webdriver": "dev-master"
    }
}

<?php
require_once('vendor/autoload.php');

use Facebook\WebDriver\Remote\DesiredCapabilities;
use Facebook\WebDriver\Remote\RemoteWebDriver;
use Facebook\WebDriver\WebDriverBy;

// 设置Firefox浏览器的路径
$firefoxOptions = new \Facebook\WebDriver\Firefox\FirefoxOptions();
$firefoxOptions->setBinary('/path/to/firefox');

// 启动Firefox浏览器
$capabilities = DesiredCapabilities::firefox();
$capabilities->setCapability(\Facebook\WebDriver\Firefox\FirefoxOptions::CAPABILITY, $firefoxOptions);
$driver = RemoteWebDriver::create('http://localhost:4444/wd/hub', $capabilities);

// 打开网页
$driver->get('http://example.com');

// 找到下载链接并点击
$downloadLink = $driver->findElement(WebDriverBy::linkText('Download'));
$downloadLink->click();

// 等待文件下载完成
sleep(5);

// 关闭浏览器
$driver->quit();

php download_file.php