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: server.rs
    path of file: ./repos/shadowsocks-rust/src/service
    
    the code of the file until where you have to start completion: //! Server launchers

use std::{future::Future, net::IpAddr, path::PathBuf, process
    
    fn verify_server_command() {
        let mut app = Command::new("shadowsocks")
            .version(crate::VERSION)
            .about("A fast tunnel proxy that helps you bypass firewalls. (https://shadowsocks.org)");
        app = super::define_command_line_options(app);
        app.debug_assert();
    }