title: How to specify SCNAction to use scene time base
body: <p>I'm trying to control playback of a scene by using SCNRenderer render(atTime:viewport:commandBuffer:passDescriptor:) method, according to Apple document: </p>
  
  <blockquote>
    <p>By default, the playback timing of actions and animations in a scene
    is based on the system time, not the scene time. Before using this
    method to control the playback of animations, set the
    uses​Scene​Time​Base property of each animation to YES, or specify the
    SCNScene​Source​Animation​Import​Policy​Play​Using​Scene​Time​Base
    option when loading a scene file that contains animations.</p>
  </blockquote>
  
  <p>I can only specify the property uses​Scene​Time​Base of CoreAnimation animation. Is SCNAction have any property to change playback to scene time?</p>