VectorGetEvaluator Method 
Name  Description  

GetEvaluator 
Gets an evaluator that can be used to find the Motion<Cartesian>
of this vector at a given date with respect to the axes in which it is defined.
See GetEvaluator(EvaluatorGroup) for details.
 
GetEvaluator(EvaluatorGroup) 
Gets an evaluator that can be used to find the
Motion<Cartesian>
of this vector in its parent Axes
at a given JulianDate.
Consider using the methods of GeometryTransformer
instead of calling this method directly.
