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: fix-json.rs
    path of file: ./repos/cargo/crates/rustfix/examples
    
    the code of the file until where you have to start completion: #![allow(clippy::print_stderr)]

use std::io::{stdin, BufReader, Read};
use std::{collections::HashMap, collections::HashSet, env, fs};

use anyhow::Error;

fn main() -> Result<(), Error> {
    let suggestions_file = env::args().nth(1).expect("USAGE: fix-json <file or -->");
    let suggestions = if suggestions_file == "--" {
        let mut buffer = String::new();
        BufReader::new(stdin()).read_to_string(&mut buffer)?;
     
    
fn main() -> Result<(), Error> {
    let suggestions_file = env::args().nth(1).expect("USAGE: fix-json <file or -->");
    let suggestions = if suggestions_file == "--" {
        let mut buffer = String::new();
        BufReader::new(stdin()).read_to_string(&mut buffer)?;
        buffer
    } else {
        fs::read_to_string(&suggestions_file)?
    };
    let suggestions = rustfix::get_suggestions_from_json(
        &suggestions,
        &HashSet::new(),
        rustfix::Filter::Everything,
    )?;

    let mut files = HashMap::new();
    for suggestion in suggestions {
        let file = suggestion.solutions[0].replacements[0]
            .snippet
            .file_name
            .clone();
        files.entry(file).or_insert_with(Vec::new).push(suggestion);
    }

    for (source_file, suggestions) in &files {
        let source = fs::read_to_string(source_file)?;
        let mut fix = rustfix::CodeFix::new(&source);
        for suggestion in suggestions.iter().rev() {
            if let Err(e) = fix.apply(suggestion) {
                eprintln!("Failed to apply suggestion to {}: {}", source_file, e);
            }
        }
        let fixes = fix.finish()?;
        fs::write(source_file, fixes)?;
    }

    Ok(())
}