# File lib/bee_task_default.rb, line 908
      def gem(description)
        require 'rubygems'
        require 'rubygems/gem_runner'
        error "gem parameter must be an existing file" if
          not description.kind_of?(String) or not File.exists?(description)
        arguments = ['build', description]
        begin
          Gem::GemRunner.new.run(arguments)
        rescue Exception
          error "Error generating Gem: #{$!}"
        end
      end