"Tickit::SingleChildWidget" - abstract base class for widgets that contain a single other widget

       Paul Evans <leonerd@leonerd.org.uk>

perl v5.40.0                                       2024-09-16                     Tickit::SingleChildWidget(3pm)

new
          $widget = Tickit::SingleChildWidget->new( %args );

       Constructs a new "Tickit::SingleChildWidget" object.

       This subclass of Tickit::ContainerWidget acts as an abstract base class for widgets that contain exactly
       one other widget. It enforces that only one child widget may be contained at any one time, and provides a
       convenient accessor to obtain it.

       "Tickit::SingleChildWidget" - abstract base class for widgets that contain a single other widget

        TODO