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: deploy.rs
    path of file: ./repos/volt/src/commands
    
    the code of the file until where you have to start completion: /*
    Copyright 2021 Volt Contributors

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for
    
    async fn exec(self, _config: VoltConfig) -> Result<()> {
        // let args: Vec<String> = app.args.clone();
        // if args.is_empty() {
        //     error!("expected commit name");
        //     process::exit(1);
        // } else {
        //     let commit_msg = &args[0];
        //     env::set_current_dir(env::current_dir().unwrap()).unwrap();
        //     // println!("current dir: {:?}", env::current_dir()?);
        //     process::Command::new("git")
        //         .args(&["add", "."])
        //         .output()
        //         .expect("Failed to add");
        //     process::Command::new("git")
        //         .args(&["commit", "-m", commit_msg.as_str()])
        //         .output()
        //         .expect("Failed to commit");
        //     process::Command::new("git")
        //         .args(&["push"])
        //         .output()
        //         .expect("Failed to push");
        // }
        Ok(())
    }