When the StateBuilder builds a [[State]] object from a raw StateDeclaration, this builder
handles the views property with logic specific to @uirouter/angular.
If no views: {} property exists on the StateDeclaration, then it creates the views object and
applies the state-level configuration to a view named $default.
This is a StateBuilder.builder function for Angular
views.When the StateBuilder builds a [[State]] object from a raw StateDeclaration, this builder handles the
viewsproperty with logic specific to @uirouter/angular.If no
views: {}property exists on the StateDeclaration, then it creates theviewsobject and applies the state-level configuration to a view named$default.