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: mod.rs
    path of file: ./repos/ockam/implementations/rust/ockam/ockam_transport_ble/src/router
    
    the code of the file until where you have to start completion: mod handle;

use ockam_core::{
    async_trait,
    compat::{boxed::Box, collections::BTreeMap, vec::Vec},
    AllowAll, Any, Mailbox, Mailboxes,
};
use ockam_core::{Address, Decodable, LocalMessage, Message, Result, Routed, Worker};

    
    async fn handle_route(&mut self, ctx: &Context, msg: LocalMessage) -> Result<()> {
        debug!("Ble route request: {:?}", msg.onward_route_ref());

        // Get the next hop
        let onward = msg.next_on_onward_route()?;

        // Look up the connection worker responsible
        let next = match self.map.get(&onward) {
            Some(addr) => addr.clone(),
            None => {
                error!("unknown route: {:?}", onward);
                return Err(TransportError::UnknownRoute)?;
            }
        };

        // Modify the transport message route
        let msg = msg.replace_front_onward_route(&next)?;

        // Send the transport message to the connection worker
        ctx.send(next.clone(), msg).await?;

        Ok(())
    }