Type Alias OnEventCallback 

pub type OnEventCallback = Box<dyn Fn(Arc<dyn InvocationContext>, Event) -> Pin<Box<dyn Future<Output = Result<Option<Event>>> + Send>> + Send + Sync>;

Callback invoked for each event generated by the agent.

Can modify events before they are yielded. Return Ok(Some(event)) to replace the event, Ok(None) to keep original.

Aliased Type

pub struct OnEventCallback(/* private fields */);