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: cat.rs
    path of file: ./repos/asciinema/src/cmd
    
    the code of the file until where you have to start completion: use crate::asciicast;
use anyhow::Result;
use clap::Args;
use std::io;

#[derive(Debug, Args)]
pub struct Cli {
    #[arg(required = true)]
    filename: Vec<String>,
}

impl Cli {
    pub fn run(self) -> Result<()> {
        let mut writer = asciicast::Writer::new(io::stdout(), 0);
        let mut time_offset: u64 =
    
    pub fn run(self) -> Result<()> {
        let mut writer = asciicast::Writer::new(io::stdout(), 0);
        let mut time_offset: u64 = 0;
        let mut first = true;

        for path in self.filename.iter() {
            let recording = asciicast::open_from_path(path)?;
            let mut time = time_offset;

            if first {
                writer.write_header(&recording.header)?;
                first = false;
            }

            for event in recording.events {
                let mut event = event?;
                time = time_offset + event.time;
                event.time = time;
                writer.write_event(&event)?;
            }

            time_offset = time;
        }

        Ok(())
    }