Method exec

flow-derive/examples/node_derive.rs:30–33

(&mut self, _: &Context)

    async fn finalize(&mut self) {}

    async fn exec(&mut self, _: &Context) -> Result<()> {
        let _: Envelope<f32> = self.first.recv::<f32>().await.unwrap();
        Ok(())
    }
}

node_register!("sub", SubNode);