Currently supported UI languages: German, English, Spanish, French, Italian, Japanese, Korean, Dutch, Polish, Brazilian Portuguese, Russian, Simplified Chinese, and Traditional Chinese.

## File Structure

Language resource files are located in:
```
src/main/resources/
├── fess_label.properties           # Base English labels (fallback)

                if (req.getAttribute(LastaWebKey.USER_LOCALE_KEY) instanceof Locale locale) {
                    return locale;
                }
                return Locale.ENGLISH;
            }).orElse(Locale.ENGLISH).getLanguage() + "\">";
        }
        return "</html>";
    }

    /**
     * Checks if a label with the specified key exists in the current request's label map.
     *

* For new features, the feature should be mentioned in the [Release Notes](platforms/documentation/docs/src/docs/release/notes.md).
* Use American English spelling in code, comments, and documentation (e.g., "color" not "colour", "initialize" not "initialise"). See [ADR-0009](architecture/standards/0009-use-american-english.md) for details.

                return StringUtil.EMPTY;
            }
        });
        getMockRequest().setLocale(Locale.ENGLISH);
        assertNull(systemHelper.getForumLink());
    }

    @Test
    public void test_getHelpLink() {
        getMockRequest().setLocale(Locale.ENGLISH);
        assertEquals("https://fess.codelibs.org/98.76/admin/xxx-guide.html", systemHelper.getHelpLink("xxx"));

          "type": "pattern_replace",
          "pattern":"(.*)",
          "replacement":""
        }
      },
      "filter": {
        "stemmer_en_filter": {
          "type": "stemmer",
          "name": "english"
        },
        "english_override": {
          "type":       "stemmer_override",
          "rules_path": "${fess.dictionary.path}en/stemmer_override.txt"
        },
        "possessive_stemmer_en_filter": {

     * @param action the statistics action to record
     */
    public void record(final Object keyObj, final StatsAction action) {
        record(keyObj, action.name().toLowerCase(Locale.ENGLISH));
    }

    /**
     * Records a custom statistics action for the specified crawler object.
     *
     * @param keyObj the crawler object being tracked
     * @param action the custom action name to record

            return null;
        }

        final String localeName = value.trim().toLowerCase(Locale.ENGLISH).replace("-", "_");

        for (final String supportedLang : supportedLanguages) {
            if (localeName.startsWith(supportedLang.toLowerCase(Locale.ENGLISH))) {
                return supportedLang;
            }
        }
        return null;
    }

    /**

        int startPosition = 0;
        int pageSize = 10;
        int offset = 0;
        String[] extraQueries = new String[0];
        Map<String, Object> attributes = new HashMap<>();
        Locale locale = Locale.ENGLISH;
        SearchRequestType type = SearchRequestType.SEARCH;
        String similarDocHash = "";

        @Override
        public String getQuery() {
            return query;
        }

            validationMessagesLambda.message(messages);
            message = ComponentUtil.getMessageManager()
                    .toMessageList(LaRequestUtil.getOptionalRequest().map(HttpServletRequest::getLocale).orElse(Locale.ENGLISH), messages)
                    .stream()
                    .collect(Collectors.joining(" "));
            return this;
        }
    }

    /**
     * Represents an API response for plugin information.

                    }
                }
            }

            for (final String s : context.fessConfig.getSearchlogRequestHeadersAsArray()) {
                final String key = s.replace('-', '_').toLowerCase(Locale.ENGLISH);
                Collections.list(context.request.getHeaders(s)).stream().forEach(v -> {
                    searchLog.addRequestHeaderValue(key, v);
                });
            }
        }