You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: distributor.rs
    path of file: ./repos/bastion/src/bastion/examples
    
    the code of the file until where you have to start completion: ///! Create a conference.
///!
///! 1st Group
///! Staff (5) - Going to organize the event // OK
///!
///! 2nd Group
///! Enthusiasts (50) - interested in participating to the conference (haven't registered yet) // OK
///!
///! 3r
    
async fn be_interested_in_the_conference(ctx: BastionContext) -> Result<(), ()> {
    loop {
        MessageHandler::new(ctx.recv().await?)
            .on_tell(|message: std::sync::Arc<&str>, _| {
                tracing::info!(
                    "child {}, received a broadcast message:\n{}",
                    ctx.current().id(),
                    message
                );
            })
            .on_tell(|schedule: ConferenceSchedule, _| {
                tracing::info!(
                    "child {}, received broadcast conference schedule!:\n{:?}",
                    ctx.current().id(),
                    schedule
                );
            })
            .on_question(|message: &str, sender| {
                tracing::info!("received a question: \n{}", message);
                // ILL BE THERE!
                sender
                    .reply(RSVP {
                        attends: rand::random(),
                        child_ref: ctx.current().clone(),
                    })
                    .unwrap();
            });
    }
}