    # File lib/rubygems/config_file.rb, line 136
      def each(&block)
        hash = @hash.dup
        hash.delete :update_sources
        hash.delete :verbose
        hash.delete :benchmark
        hash.delete :backtrace
        hash.delete :bulk_threshold

        yield :update_sources, @update_sources
        yield :verbose, @verbose
        yield :benchmark, @benchmark
        yield :backtrace, @backtrace
        yield :bulk_threshold, @bulk_threshold

        yield 'config_file_name', @config_file_name if @config_file_name

        hash.each(&block)
      end