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: hub.rs
    path of file: ./repos/fluvio/crates/smartmodule-development-kit/src
    
    the code of the file until where you have to start completion: use std::path::PathBuf;

use anyhow::Result;
use tracing::debug;

use fluvio_future::task::run_block_on;
use fluvio_hub_util as hubutil;
use hubutil::HubAccess;

pub const CLI_CONFIG_PATH: &str = ".fluvio";
pub const CLI_CONFIG_HUB: &str = "hub"; // hub area of config

#[derive(Debug, clap::Parser)]
pub enum Hub
    
pub fn set_hubid(hubid: &str, access: &mut HubAccess) -> Result<()> {
    // if not: ask server if it exists
    if let Err(e) = run_block_on(access.create_hubid(hubid)) {
        eprintln!("{e}");
        std::process::exit(1);
    }
    access.hubid = hubid.to_string();

    let cfgpath = def_hub_cfg_path()?;
    access.write_hash(cfgpath)?;
    print!("hubid set to {hubid}");
    Ok(())
}