return key;
        }
        String keyStr = key.toString();
        if (keyStr.indexOf('_') < 0) {
            keyStr = CaseFormat.LOWER_CAMEL.to(CaseFormat.LOWER_UNDERSCORE, StringUtils.uncapitalize(keyStr));
        } else {
            keyStr = CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL, keyStr);
        }
        return keyStr;
    }

    @Override
    public int size() {

        assertEquals("abc", StringUtil.decapitalize("abc"));
        assertEquals("abc", StringUtil.decapitalize("Abc"));
        assertEquals("ABC", StringUtil.decapitalize("ABC"));
        assertEquals("userId", StringUtil.decapitalize("UserId"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testEndsWithIgnoreCase() throws Exception {

     * Usage example:
     * </p>
     *
     * <pre>
     * StringUtil.decapitalize("UserId")  = "userId"
     * StringUtil.decapitalize("ABC")     = "ABC"
     * </pre>
     *
     * @param name
     *            the string to decapitalize
     * @return the decapitalized string
     */
    public static String decapitalize(final String name) {
        if (isEmpty(name)) {
            return name;
        }

#         ; propertiesHtmlList = list:{ [env or config or label or message] }
#     }
#     ; appMap = map:{
#         ; [application name, camel case, initial uncapitalised] = map:{
#             ; path = [relative path to application project from DBFlute client]
#             ; freeGenList = list:{ [env or config or label or message or html] }

                if (m.getParameterTypes().length != 0 || methodName.equals("getClass") || m.getReturnType() == void.class) {
                    continue;
                }
                final String propertyName = StringUtil.decapitalize(methodName.substring(3));
                setupReadMethod(m, propertyName);
            } else if (methodName.startsWith("is")) {
                if (m.getParameterTypes().length != 0

Also, HTTP headers are case-insensitive, so, you can declare them with standard Python style (also known as "snake_case").

So, you can use `user_agent` as you normally would in Python code, instead of needing to capitalize the first letters as `User_Agent` or something similar.

If for some reason you need to disable automatic conversion of underscores to hyphens, set the parameter `convert_underscores` of `Header` to `False`:

Но затем вы должны вызвать «тот метод, который преобразует первую букву в верхний регистр».

Было это `upper`? Или `uppercase`? `first_uppercase`? `capitalize`?

Тогда вы попробуете с давним другом программиста: автодополнением редактора.

Вы вводите первый параметр функции, `first_name`, затем точку (`.`), а затем нажимаете `Ctrl+Space`, чтобы запустить дополнение.

Aber dann müssen Sie „diese Methode aufrufen, die den ersten Buchstaben in Großbuchstaben umwandelt“.

War es `upper`? War es `uppercase`? `first_uppercase`? `capitalize`?

Dann versuchen Sie es mit dem langjährigen Freund des Programmierers, der Editor-Autovervollständigung.

Bir noktada fonksiyonun tanımına başlayacaktınız, parametreleri hazır hale getirdiniz...

Ama sonra "ilk harfi büyük harfe dönüştüren yöntemi" çağırmanız gerekir.

 `upper` mıydı ? Yoksa  `uppercase`' mi? `first_uppercase`? `capitalize`?

Ardından, programcıların en iyi arkadaşı olan otomatik tamamlama ile denediniz.

'first_name', ardından bir nokta ('.') yazıp otomatik tamamlamayı tetiklemek için 'Ctrl+Space' tuşlarına bastınız.

        if (fessConfig.hasNotification()) {
            final Map<String, String> dataMap = new HashMap<>();
            for (final Map.Entry<String, String> entry : infoMap.entrySet()) {
                dataMap.put(StringUtil.decapitalize(entry.getKey()), entry.getValue());
            }

            String hostname = fessConfig.getMailHostname();
            if (StringUtil.isBlank(hostname)) {