# File languages-statistics.rb, line 407
        def total_integer_value(integer, field_name, language_entry, error_messages)
                if integer == nil then
                        return 0
                end
                if integer < 0 then
                        error_message = language_entry.description + ' (' + language_entry.code + ') から取得した' + field_name
                        error_messages.push(error_message)
                        return 0
                end
                return integer
        end