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: mspec-ci.rb
    path of file: ./repos/artichoke/artichoke-backend/vendor/ruby/spec/mspec/lib/mspec/commands
    
    the code of the file until where you have to start completion: #!/usr/bin/env ruby

$:.unshift File.expand_path(File.dirname(__FILE__) + '/../lib')

require 'mspec/version'
require 'mspec/utils/options'
require 'mspec/utils/script'


class MSpecCI < MSpecScript
  def option
    
  def run
    MSpec.register_tags_patterns config[:tags_patterns]
    MSpec.register_files @files

    tags = ["fails", "critical", "unstable", "incomplete", "unsupported"]
    tags += Array(config[:ci_xtags])

    require 'mspec/runner/filters/tag'
    filter = TagFilter.new(:exclude, *tags)
    filter.register

    MSpec.process
    exit MSpec.exit_code
  end