Use of MapView.When into WebAppBuilder

[rajujee]

I am stuck to use of MapView.When under WebAppBuilder Widget. I am attaching JS API link

MapView | API Reference | ArcGIS API for JavaScript 4.7  and example 

Custom Recenter Widget - 4.7 

Any guidance is greatly appreciated.

[RobertScheitlin__GISP]

Raju,

   Unless you are building a widget exclusively for 3D then you should not be using JS API 4.x documentation.