title: How do you define an @interface in Scala?
body: <p>How does one create an <code>@interface</code> in Scala?  I honestly feel stupid asking that question, but I can't find the syntax for this <em>anywhere</em>.  I know that you can consume them, but how do you actually define new ones in Scala?</p>
  
  <p>Java:</p>
  
  <pre><code>public @interface MyAnnotation { }
  </code></pre>
  
  <p>Scala:</p>
  
  <pre><code>???
  </code></pre>