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: entrypoint.rb
    path of file: ./repos/runfile/lib/runfile
    
    the code of the file until where you have to start completion: module Runfile
  # Serves as the initial entrypoint when running +run+.
  class En
    
    def run!
      run
    rescue Runfile::ExitWithUsage => e
      say e.message
      e.exit_code
    rescue Runfile::UserError => e
      allow_debug e
      say! "mib` #{e.class} `"
      say! e.message
      1
    rescue Interrupt
      say! 'm`Goodbye`', replace: true
      1
    rescue => e
      allow_debug e
      say! "rib` #{e.class} ` in nu`#{origin(e)}`"
      say! e.message
      say! "\nPrefix with nu`DEBUG=1` for full backtrace" unless ENV['DEBUG']
      1
    end