Creates a new instance of a Slider.
| start | The minimum value that the slider encodes. | 
| end | The maximum value that the slider encodes. | 
| direction | The direction of the slider (Horizontal or Vertical). | 
| pageSize | A generic page size used to change the value when clicking in the slider. | 
Creates a new instance of a Slider.
| label | The string representing the label that will appear beside the field. | 
| start | The minimum value that the slider encodes. | 
| end | The maximum value that the slider encodes. | 
| direction | The direction of the slider (Horizontal or Vertical). | 
| pageSize | A generic page size used to change the value when clicking in the slider. | 
Creates a new instance of a Slider.