title: Firefox browser imports not working even gecko driver is used
body: <p>I'm using Selenium 3.3.1 with Gecko driver to launch Firefox. I'm getting below error when i run my testng test.if i upgrade to 3.4.0 Firefox driver not working. imports not shown.</p>
  
  <pre><code>"java.lang.NoClassDefFoundError: com/google/common/base/Function" - Exception
  </code></pre>
  
  <p>Can some one please provide the exact code for launching Firefox latest with selenium 3.4</p>