fn default() -> Self {
        App {
            manager: ComponentWrapper::new((), ()),
        }
    }
/// Create a new App with a component `COMP` that has void props and events.
Create a new App with a component `COMP` that has void props and events.
Create a new App with a component ` COMP ` that has void props and events .
fn default() -> Self {
        App {
            manager: ComponentWrapper::new((), ()),
        }
    }
fn default ( ) -> Self { App { manager : ComponentWrapper :: new ( ( ) , ( ) ) , } }
Create a new App with a component `COMP` that has void props and events.
Create a new App with a component ` COMP ` that has void props and events .