title: XML detect debug mode
body: <p>I know that programatically I can use </p>
  
  <pre><code>if (BuildConfig.DEBUG) {
    // do something for a debug build
  }
  </code></pre>
  
  <p>However, what I'd like to do is show a watermark when in debug mode. Is there a way to do something similar to this in the XML files?</p>