Creates a javafx.animation.KeyValue instance.
This object takes a either a javafx.beans.WritableValue argument, or takes an object instance and a property name within that instance. These are used as the property to change as a result of the timeline.
This node takes the attributes defined on the javafx.animation.KeyFrame class. see javafx.animation.KeyFrame
The onFinished attribute may take either a javafx.event.EventHandler object or a groovy closure object. The groovy closure will be called with the javafx.event.Event object as a single argument..
This node must have one "to" node and may have one "tween" node. see
Creates a timeline KeyValue for a key frame..