Fetches an object build from the template XML for widget_type in the widget.
This will only report children which were previously declared with [method@Gtk.WidgetClass.bind_template_child_full] or one of its variants.
This function is only meant to be called for code which is private to the widget_type which declared the child and is meant
for language bindings which cannot easily make use of the GObject structure offsets.
| this |
a widget |
| widget_type |
The type of the widget class that defines the child in the template |
| name |
ID of the child defined in the template XML |
|
the object built in the template XML with the id |