# File lib/hammer_cli/subcommand.rb, line 53
      def subcommand(name, description, subcommand_class = self, &block)
        existing = find_subcommand(name)
        if existing
          raise HammerCLI::CommandConflict, _("can't replace subcommand %<name>s (%<existing_class>s) with %<name>s (%<new_class>s)") % {
            :name => name,
            :existing_class => existing.subcommand_class,
            :new_class => subcommand_class
          }
        end
        super
      end