#NEWLINE# def get_nested_route_tree( self ) : #NEWLINE# #INDENT# root_route = node . RouteNode ( '/' , _ExampleHandler ) . add_children ( [ node . RouteNode ( 'widget' , _ExampleHandler , 'widgets' ) . add_children ( [ node . RouteNode ( '(\\d+)' , _ExampleHandler , 'widget' ) . add_children ( [ node . RouteNode ( 'start' , _ExampleHandler ) , node . RouteNode ( 'end' , _ExampleHandler ) ] ) ] ) ] ) #NEWLINE# return self