title: HtmlAgilityPack set node InnerText
body: <p>I want to replace inner text of HTML tags with another text.
  I am using HtmlAgilityPack
  <br> I use this code to extract all texts </p>
  
  <pre><code>HtmlDocument doc = new HtmlDocument();
  doc.Load("some path")
  
  foreach (HtmlNode node in doc.DocumentNode.SelectNodes("//text()[normalize-space(.) != '']")) {
      // How to replace node.InnerText with some text ?
  }
  </code></pre>
  
  <p>But InnerText is readonly. How can I replace texts with another text and save them to file ?</p>