title: Add empty item to list
body: <p>I have the following code:</p>
  
  <pre><code>List.from((currentState as ItemsLoaded).items)..add();
  </code></pre>
  
  <p>I want to add an empty item and then assign a unique uuid in the class Item. How can I do this? Now it says that I need an argument for add()</p>