title: SwiftUI - How to get size (height) of ScrollView content
body: <p>I want to determine the height of the content inside my (vertical) <code>ScrollView</code>.</p>
  <pre><code>ScrollView {  
      //My Content
  }
  </code></pre>
  <p>Is this possible? I've tried a few things but nothing seems to work.</p>
  <p>Unfortunately, using simply the <code>GeometryReader</code> isn't working, since it returns a value of <code>10</code> no matter what content is inside the <code>ScrollView</code></p>
  <p>Thanks!</p>