Timeline animation

Hypothetical scenario: A simple circle object bouncing up and down using a timeline animation with three key frames across six seconds.

I can reference the object by its tag… but how do I:

  1. Reference the position node (in the timeline array - see scene JSON) to programatically adjust the objects attributes?

  2. Reference the animation itself - so I can pause, loop etc… I have searched the docs but no where can I find a reference to timeline or position (other than physical display position) of a object.

Many thanks,

Ian.