Gets or sets a value that indicates whether the timeline plays in reverse after it completes a forward iteration.
<object AutoReverse="Boolean" .../>
value = object.AutoReverse
object.AutoReverse = value
true if the timeline plays in reverse at the end of each iteration; otherwise, false.
This property is read/write. The default value is false.
If the AutoReverse property is set to true, the timeline plays for twice the length of time specified by its Duration property.