title: How to fix deprecated 'buttonstyle'
body: <p>With Beta 5 of Xcode 11 I get the warning:</p>
  
  <blockquote>
    <p>"'buttonStyle' is deprecated: Use concrete 'PrimitiveButtonStyle' types directly instead."</p>
  </blockquote>
  
  <p>I tried a couple of things, but didn't find out how to fix this.</p>
  
  <pre><code>Button(action: { }) {
      Text("Hello")
  }.buttonStyle(.plain)
  </code></pre>