class RuboCop::CLI

def parallel_by_default!
  # See https://github.com/rubocop/rubocop/pull/4537 for JRuby and Windows constraints.
  return if RUBY_ENGINE != 'ruby' || RuboCop::Platform.windows?
  if (@options.keys - DEFAULT_PARALLEL_OPTIONS).empty? &&
     @config_store.for_pwd.for_all_cops['UseCache'] != false
    puts 'Use parallel by default.' if @options[:debug]
    @options[:parallel] = true
  end
end