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: hg.rb
    path of file: ./repos/capistrano/lib/capistrano/scm
    
    the code of the file until where you have to start completion: require "capistrano/scm/plugin"
require "securerandom"

class Capistrano::SCM::Hg < Capistrano::SCM::Plugin
  def register_hooks
    after "deploy:new_release_path", "hg:create_release"
    before "deploy:check", "hg:check"
    before "deploy:set_current_revision", "hg:set_current_revision"
  end

  def define_tasks
    eval_rakefile File.expand_path("../tasks/hg.rake", __FILE__)
  end

  def hg(*args)
    args.unshift(:hg)
   
    
  def archive_to_release_path
    if (tree = fetch(:repo_tree))
      tree = tree.slice %r#^/?(.*?)/?$#, 1
      components = tree.split("/").size
      temp_tar = "#{fetch(:tmp_dir)}/#{SecureRandom.hex(10)}.tar"

      hg "archive -p . -I", tree, "--rev", fetch(:branch), temp_tar

      backend.execute :mkdir, "-p", release_path
      backend.execute :tar, "-x --strip-components #{components} -f", temp_tar, "-C", release_path
      backend.execute :rm, temp_tar
    else
      hg "archive", release_path, "--rev", fetch(:branch)
    end