widget property
override
The current configuration.
A State object's configuration is the corresponding StatefulWidget instance. This property is initialized by the framework before calling initState. If the parent updates this location in the tree to a new widget with the same runtimeType and Widget.key as the current configuration, the framework will update this property to refer to the new widget and then call didUpdateWidget, passing the old configuration as an argument.
Implementation
@override
ZetaCheckbox get widget => super.widget as ZetaCheckbox;