title: swift ModelEntity.load(named: filename) has problem in gesture control
body: <p>I loaded model with</p>
  <pre><code>let me=try! ModelEntity.load(named: filename)
          let parentEntity = ModelEntity()
          parentEntity.addChild(me)
  </code></pre>
  <p>and to installGesture,
  I want to when model is long pressed,
  it move.</p>
  <p>so , on my customarView.swift,</p>
  <pre><code>@objc func handleLongPress(recognizer: UILongPressGestureRecognizer) {
          let location = recognizer.location(in: self)
                  
          if let entity = self.entity(at: location) as? ModelEntity {
              if let anchorEntity = entity.anchor, anchorEntity.name == &quot;toy_drummer&quot; {
                  let parentEntity = ModelEntity()
                  parentEntity.addChild(entity.parent!)
  
  //                installGestures(.all, for: entity).forEach { recognizer in
  //                              recognizer.addTarget(self, action: #selector(handleGesture(sender:)))
  //                          }
  </code></pre>
  <p>the problem is that when I install gesture with entity above code,
  it move only a parts of toy_drummer like head , stick, body...
  so I made ModelEntity Object newly then add child with entity.parent which I think its' whole model, but then it disappear,</p>
  <p>How can I add gesture to whole model itself?</p>