of<T extends ComponentThemeData> static method
Gets the component theme data of type T from the closest ancestor.
Throws if no ComponentTheme of type T is found.
Returns: T — the component theme data.
Implementation
static T of<T extends ComponentThemeData>(BuildContext context) {
final data = maybeOf<T>(context);
assert(data != null, 'No ComponentTheme<$T> found in context');
return data!;
}