Selenium Java API Docs 官方文档：https://www.selenium.dev/selenium/docs/api/java/
Selenium WebDriver | Selenium 中文文档：
https://wizardforcel.gitbooks.io/selenium-doc/content/official-site/selenium-web-driver.html
https://www.javadoc.io/doc/org.seleniumhq.selenium/selenium-api/2.50.1/org/openqa/selenium/WebDriver.html