TabBarView
        Inherits: LayoutControl, AdaptiveControl
A page view with one child per tab.
Properties
- 
          clip_behavior(ClipBehavior) –Defines how the controlswill be clipped.
- 
          controls(list[Control]) –A list of controls, where each control represents the 
- 
          viewport_fraction(Number) –The fraction of the viewport that each page should occupy.