(Since version 8.0.60-R10) Use Indefinite; INDEFINITE will be removed in a future release
(Since version 8.0.60-R10) Use One; ONE will be removed in a future release
(Since version 8.0.60-R10) Use Unknown; UNKNOWN will be removed in a future release
(Since version 8.0.60-R10) Use Zero; ZERO will be removed in a future release
Companion Object for scalafx.util.Duration.