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: node_ip.rs
    path of file: ./repos/bottlerocket/sources/api/netdog/src/cli
    
    the code of the file until where you have to start completion: use super::{error, print_json, Result};
use crate::CURRENT_IP;
use argh::FromArgs;
use snafu::ResultExt;
use std::fs;
use std::net::IpAddr;
use std::str::FromStr;

#[derive(FromArgs, PartialEq, Debug)]
#[argh(subcommand, name = "node-ip")]
/// Return the current IP address
pub(crate) struct NodeIpArgs {}
    
pub(crate) fn run() -> Result<()> {
    let ip_string = fs::read_to_string(CURRENT_IP)
        .context(error::CurrentIpReadFailedSnafu { path: CURRENT_IP })?;
    // Validate that we read a proper IP address
    let _ = IpAddr::from_str(&ip_string).context(error::IpFromStringSnafu { ip: &ip_string })?;

    // sundog expects JSON-serialized output
    print_json(ip_string)
}