of<T> static method
Implementation
static CustomGroupController of<T>(
BuildContext context, {
bool nullOk = false,
}) {
final CustomGroupedCheckboxState<T>? result =
context.findAncestorStateOfType<CustomGroupedCheckboxState<T>>();
if (nullOk || result != null) return result!.widget.controller;
throw FlutterError.fromParts(<DiagnosticsNode>[
ErrorSummary(
'CustomGroupedCheckbox.of() called with a context that does not contain an CustomGroupedCheckbox.'),
ErrorDescription(
'No CustomGroupedCheckbox ancestor could be found starting from the context that was passed to CustomGroupedCheckbox.of().'),
context.describeElement('The context used was')
]);
}