private static void StartSpyingFacade(
UIElement sourceElement,
Compositor compositor,
CompositionFacadeType facadeType,
out CompositionPropertySet propertySet,
out ExpressionAnimation expressionAnimation,
out string propertySetPropertyName)
{
propertySet = null;
propertySetPropertyName = null;
expressionAnimation = null;
if (sourceElement == null)
{
throw new ArgumentException();
}
propertySetPropertyName = FacadeTypeToStringName(facadeType);
StartSpy <UIElement>(sourceElement, s_elementsDictionary, compositor, ref propertySetPropertyName, ref propertySetPropertyName, out propertySet, out expressionAnimation);
expressionAnimation.SetExpressionReferenceParameter(c_source, sourceElement);
}