use clap::{Arg, ArgAction, Command, builder::PossibleValue};fn main() {    #[allow(unused_mut)]    let mut cmd = Command::new("stdio-fixture")        .version("1.0")        .long_version("1.0 - a2132c")        .term_width(0)        .max_term_width(0)        .arg_required_else_help(true)        .subcommand(Command::new("more"))        .subcommand(            Command::new("test")                .visible_alias("do-stuff")                .long_about("Subcommand with one visible alias"),        )        .subcommand(            Command::new("test_2")                .visible_aliases(["do-other-stuff", "tests"])                .about("several visible aliases")                .long_about("Subcommand with multiple visible aliases"),        )        .subcommand(            Command::new("test_3")                .long_flag("test")                .about("several visible long flag aliases")                .visible_long_flag_aliases(["testing", "testall", "test_all"]),        )        .subcommand(            Command::new("test_4")                .short_flag('t')                .about("several visible short flag aliases")                .visible_short_flag_aliases(['q', 'w']),        )        .subcommand(            Command::new("test_5")                .short_flag('e')                .long_flag("test-hdr")                .about("all kinds of visible aliases")                .visible_aliases(["tests_4k"])                .visible_long_flag_aliases(["thetests", "t4k"])                .visible_short_flag_aliases(['r', 'y']),        )        .arg(            Arg::new("verbose")                .long("verbose")                .help("log")                .action(ArgAction::SetTrue)                .long_help("more log"),        )        .arg(            Arg::new("config")                .action(ArgAction::Set)                .help("Speed configuration")                .short('c')                .long("config")                .value_name("MODE")                .value_parser([                    PossibleValue::new("fast"),                    PossibleValue::new("slow").help("slower than fast"),                    PossibleValue::new("secret speed").hide(true),                ])                .default_value("fast"),        )        .arg(            Arg::new("name")                .action(ArgAction::Set)                .help("App name")                .long_help("Set the instance app name")                .value_name("NAME")                .visible_alias("app-name")                .default_value("clap"),        )        .arg(            Arg::new("fruits")                .short('f')                .visible_short_alias('b')                .action(ArgAction::Append)                .value_name("FRUITS")                .help("List of fruits")                .default_values(["apple", "banane", "orange"]),        );    #[cfg(feature = "env")]    {        cmd = cmd.arg(            Arg::new("env_arg")                .help("Read from env var when arg is not present.")                .value_name("ENV")                .env("ENV_ARG"),        );    }    #[cfg(feature = "color")]    {        use clap::builder::styling::{AnsiColor, Styles};        const STYLES: Styles = Styles::styled()            .header(AnsiColor::Green.on_default().bold())            .error(AnsiColor::Red.on_default().bold())            .usage(AnsiColor::Green.on_default().bold().underline())            .literal(AnsiColor::Blue.on_default().bold())            .placeholder(AnsiColor::Cyan.on_default())            .valid(AnsiColor::Green.on_default())            .invalid(AnsiColor::Magenta.on_default().bold())            .context(AnsiColor::Yellow.on_default().dimmed())            .context_value(AnsiColor::Yellow.on_default().italic());        cmd = cmd.styles(STYLES);    }    cmd.get_matches();}