title: Why is projectableNodes an any[][]?
body: <p>I've played around with</p>
  
  <p>ViewContainerRef.createComponent</p>
  
  <p>and I'm wondering why the parameter projectableNodes is an any[][]. Unfortunatelly, this parameter hasn't been documented so far.</p>
  
  <p>What to pass within this 2D-Array?</p>
  
  <p>Wishes,
  Manfred</p>