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: main.rs
    path of file: ./repos/pest/debugger/src
    
    the code of the file until where you have to start completion: // pest. The Elegant Parser
// Copyright (c) 2018-2022 Drago»ô Tiselice, Tomas Tauber
//
// Licensed under the Apache License, Version 2.0
// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. All files in the project carrying such notice may not be copied,
// modified, or distributed except according to those terms.
//! # pest debugger
//!
//! This crate contains the CLI debugger.

#!
    
    fn init(self, context: &mut Cli) {
        if let Some(grammar_file) = self.grammar_file {
            if let Err(e) = context.grammar(grammar_file) {
                eprintln!("Error: {}", e);
            }
        }
        if let Some(input_file) = self.input_file {
            if let Err(e) = context.input(input_file) {
                eprintln!("Error: {}", e);
            }
        }
        if let Some(breakpoint) = &self.breakpoint {
            context.breakpoint(breakpoint);
        }
        if let Some(rule) = self.rule {
            if let Err(e) = context.run(&rule) {
                eprintln!("Error: {}", e);
            }
        }
    }