public static List<String> validate(ServiceTemplateType templateType,
                                        String htmlContent) {


        List<String> errors = simplePlaceholderValidator(htmlContent, templateType).validate(
                ImmutableMap.of(
                        LP_WAP_SUBSCRIBE_AOC,
                        Arrays.asList(SUBNAME, SUBPRICE, ACCOUNT, PROVIDER, TARIFF_YES_URL, TARIFF_NO_URL, LK_LINK_URL),
                        LP_WAP_SUBSCRIBE_ACCEPT,
                        Arrays.asList(SUBNAME, SUBPRICE, ACCOUNT, PROVIDER, ACTION_FORM, SMS_CODE_INPUT, LK_LINK_URL),
                        LP_WAP_SUBSCRIBE_ACCEPT,
                        Arrays.asList(SUBNAME, SUBPRICE, ACCOUNT, PROVIDER, ACTION_FORM, SMS_CODE_INPUT, LK_LINK_URL)
                )
        );

        // CAPTCHA_IMG
        if (LP_WEP_SUBSCRIBE_AUTHORIZATION.equals(templateType)) {
            Document d = Jsoup.parse(htmlContent);
            Elements elements = d.select("img[src~=" + CAPTCHA_IMG_SRC);
            if (CollectionUtils.isEmpty(elements)) {
                errors.add(CAPTCHA_IMG);
            }

        }

        return errors;
    }

    private static SimplePlaceholderValidator simplePlaceholderValidator(String htmlContent, ServiceTemplateType templateType) {

        return pattern -> pattern.get(templateType).stream()
                .filter(placeHolder -> !htmlContent.contains(placeHolder))
                .collect(Collectors.toList());
    }

    @FunctionalInterface
    private interface SimplePlaceholderValidator {

        List<String> validate(Map<ServiceTemplateType, List<String>> pattern);
    }