Creates a new display object.
Destroys/disposes a display object when it will no longer be used.
dynamicreset (target:T, state:S):Void
Prepares a display object to be used again. This method should restore
the display object to its original state from when it was returned by
dynamicupdate (target:T, state:S):Void
Updates the properties an existing display object. It may be a display
object that was used previously, but it will have been passed to
reset() first, to ensure that it has been restored to its original
state when it was returned from