code: def checkout(ruleset="")
        if ruleset.empty? && options["all"].nil?
          say "Please specify either --ruleset or --all", :red
          say help "checkout"
        else
          KRL_CMD::Checkout.go(ruleset, options)
        end
      end
docs: method_option :ruleset, :type => :string, :default => false, :aliases => "-r", :banner => "Ruleset ID, example: a1x1"