code: private FadeTransition getSlideLabelTransition(final Duration gap) {
          return FadeTransitionBuilder.create()
                                      .node(this.slideLabel)
                                      .delay(gap)
                                      .duration(Duration.millis(1200))
                                      .fromValue(0).toValue(1)
                                      .build();
      }
docs: TODO To complete.
  
  @return