# File lib/vagrant-lxc/command/root.rb, line 33
        def help
          opts = OptionParser.new do |opts|
            opts.banner = "Usage: vagrant lxc <subcommand> [<args>]"
            opts.separator ""
            opts.separator "Available subcommands:"

            # REFACTOR Use @subcommands.keys.sort  
            #          https://github.com/mitchellh/vagrant/commit/4194da19c60956f6e59239c0145f772be257e79d
            keys = []
            @subcommands.each { |key, value| keys << key }

            keys.sort.each do |key|
              opts.separator "    #{key}"
            end

            opts.separator ""
            opts.separator "For help on any individual subcommand run `vagrant lxc <subcommand> -h`"
          end

          @env.ui.info(opts.help, :prefix => false)
        end