# File languages-statistics.rb, line 592
        def execute
                time_started = Time.now.utc
                statistics_info_element = REXML::Document.new(File.new(STATISTICS_INFO_FILE_NAME), 'r').root
                if @config == nil then
                        @config = Config.new(statistics_info_element.
                                        get_elements('//' + STATISTICS_INFO_WORKING_DIRECTORY_ELEMENT_NAME).first.text)
                end
                log_file_name = @config.working_directory + '/log.txt'
                logger = Logger.new([$stderr, File.new(log_file_name, 'a')])
                logger.log '統計ページの更新'
                date_time_format = DateTimeFormat.new()
                logger.log '開始しました。 ' + date_time_format.format(time_started)
                resource = Resource.new(logger)
                StatisticsFetcher::STATISTICS_INFO_FILE_NAME
                text = ''
                text += @config.edit_header
                File.new(NewStatisticsPage::FILE_NAME, 'r').readlines.each do |line|
                        text += line
                end
                bot = WikiBot.new(@config)
                bot.login
                bot.obtain_edit_token(@config.edit_target_page)
                update_summary = statistics_info_element.
                                        get_elements('//' + STATISTICS_INFO_UPDATE_SUMMARY_ELEMENT_NAME).first.text
                logger.log '更新します。 - ' + @config.edit_target_page
                bot.edit(@config.edit_target_page, text, update_summary)
#               bot.edit(@config.edit_target_page, @config.edit_header, '砂場ならし')
                logger.log '更新しました。 - ' + update_summary
                bot.logout
                time_ended = Time.now.utc
                logger.log '終了しました。 ' + date_time_format.format(time_ended)
                logger.log '要した時間: ' + (time_ended - time_started).to_s + ' 秒'
                FileUtils.copy(log_file_name, '.')
        end