public void ZoomToFit( StretchPolicy policy, Action afterwards )
Parameters
- policy
 - normally a value of StretchPolicy.Uniform, but may be StretchPolicy.UniformToFill
 - afterwards
 - an 
Actionto be performed after the animation is finished; may be null 
Action to be performed after the animation is finished; may be null
public void ZoomToFit( StretchPolicy policy, Action afterwards )
Action to be performed after the animation is finished; may be null