title: Specifying multiple conditions in xpath
body: <p>I want to select all the tags with <code>&lt;td class='blob-code blob-code-addition'&gt; and &lt;td class='blob-code blob-code-deletion'&gt;</code> . So I am trying to include <code>or</code> condition here between the two predicates. It does not work. However, if I include only one of the two classes it works . What is the problem here? Something is wrong with the syntax.</p>
  
  <pre><code>By getChanges = By.xpath("//td[@class='blob-code blob-code-addition'] or  //td[@class='blob-code blob-code-deletion']");
  </code></pre>