title: Where are the icons from?
body: <p>I use a Flutter project from GitHub to learn Dart/Flutter. But now I have a problem, because I don't know where the icons come from!</p>
  <p>This is the code snippet:</p>
  <pre><code>Icon(Icons.search,color: Colors.black,),
  </code></pre>
  <p>I want to know where the icon come from and how I can put there a FontAwesome Icon instead: <a href="https://fontawesome.com/icons/copy?style=regular" rel="nofollow noreferrer">https://fontawesome.com/icons/copy?style=regular</a></p>