A specialized subclass of DzNodeProperty which will only allow the user to select nodes that are skeletons from the scene. This is currently used by skeletons for the 'Fit To' property.
Default Constructor. Creates a non-animatable, non-user property.
true, create an animatable property. If
false, a non-animatable property is created.
true, creates a user property; user properties are properties that can be added/deleted by users.
void : aboutToChange()
Emitted immediately before the value of the property changes.