    # File lib/chef/knife/role_create.rb, line 37
          def run
            @role_name = @name_args[0]

            if @role_name.nil?
              show_usage
              ui.fatal("You must specify a role name")
              exit 1
            end

            role = Chef::Role.new
            role.name(@role_name)
            role.description(config[:description]) if config[:description]
            create_object(role)
          end