//! Compile-fail: #[derive(EventSourced)] without the required `input = <Lane>` attribute.
use batpak::prelude::*;
#[derive(serde::Serialize, serde::Deserialize, EventPayload)]
#[batpak(category = 8, type_id = 1)]
struct Ping {}
#[derive(Default, serde::Serialize, serde::Deserialize, EventSourced)]
#[batpak(event = Ping, handler = on_ping)]
struct State {}
impl State {
fn on_ping(&mut self, _p: Ping) {}
}
fn main() {}