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: cli.rs
    path of file: ./repos/coreutils/chroot/src
    
    the code of the file until where you have to start completion: use clap::{
    crate_authors, crate_description, crate_name, crate_version, App, AppSettings::TrailingVarArg,
    Arg,
};

pub(crate) fn create_app<'help>() -> App<'help> {
    App::new(crate_name!())
        .version(crate_version!())
        .author(crate_authors!())
        .about(crate_description!())
        .mut_arg("help", |help| help.help("Display help information.").short('?'))
        .mut_arg("version", |v| v.help("Display version information."))
        .setting(TrailingVarArg)
        .arg(Arg::new("NEWROOT").help("New root directory.").required(true))
        .arg(
            Arg::new("COMMAND")
                .help("Shell command to run.")
                .long_help(
                    "Shell command to run.\n\nIf
    
pub(crate) fn create_app<'help>() -> App<'help> {
    App::new(crate_name!())
        .version(crate_version!())
        .author(crate_authors!())
        .about(crate_description!())
        .mut_arg("help", |help| help.help("Display help information.").short('?'))
        .mut_arg("version", |v| v.help("Display version information."))
        .setting(TrailingVarArg)
        .arg(Arg::new("NEWROOT").help("New root directory.").required(true))
        .arg(
            Arg::new("COMMAND")
                .help("Shell command to run.")
                .long_help(
                    "Shell command to run.\n\nIf COMMAND is not specified, it defaults to \
                     '$(SHELL) -i'.\nIf $(SHELL) is not set, /bin/sh is used.",
                )
                .multiple_occurrences(true),
        )
        .arg(
            Arg::new("user")
                .help("Specify the user ID or name.")
                .long("user")
                .short('u')
                .value_name("USER")
                .conflicts_with("userspec"),
        )
        .arg(
            Arg::new("group")
                .help("Specify the group ID or name.")
                .long("group")
                .short('g')
                .value_name("GROUP")
                .conflicts_with("userspec"),
        )
        .arg(
            Arg::new("userspec")
                .help("Specify user and group (ID or name) to use.")
                .long_help(
                    "Specify user and group (ID or name) to use.\n\nThe input format is \
                     'USER:GROUP'",
                )
                .long("userspec")
                .short('U')
                .value_name("USER:GROUP")
                .conflicts_with_all(&["user", "group"]),
        )
        .arg(
            Arg::new("groups")
                .help("Specify supplementary groups.")
                .long_help("Specify supplementary groups.\n\nThe GROUPS is a comma separeted list")
                .long("groups")
                .short('G')
                .value_name("GROUPS"),
        )
}