validateApi(body, messages -> {});
        if (body.documents == null) {
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, "documents is required."));
        }
        if (body.documents.isEmpty()) {
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, "documents is empty."));
        }

# Javax Validator
# ---------------
constraints.AssertFalse.message = {item}는 false여야 합니다.
constraints.AssertTrue.message = {item}는 true여야 합니다.
constraints.DecimalMax.message = {item}는 {value}보다 작아야 합니다.
constraints.DecimalMin.message = {item}는 {value}보다 커야 합니다.
constraints.Digits.message = {item}는 숫자여야 합니다. (기대값: <숫자>.<숫자>)
constraints.Future.message = {item}는 미래의 값이어야 합니다.
constraints.Max.message = {item}는 {value} 이하여야 합니다.

constraints.NotEmpty.message = {item} は未入力です。
constraints.ParametersScriptAssert.message = スクリプト式「{script}」がtrueではありません。
constraints.Range.message = {item} は {min} から {max} の範囲にある必要があります。
constraints.SafeHtml.message = {item} は危険な HTML コンテンツを含んでいます。
constraints.ScriptAssert.message = スクリプト式「{script}」がtrueではありません。
constraints.URL.message = {item} は有効なURLではありません。
constraints.Required.message = {item} が必要です。

├── app.xml, fess.xml          # DI configuration
├── fess_*.xml                 # Feature-specific DI
├── fess_label_*.properties    # UI labels (i18n)
├── fess_message_*.properties  # Validation messages (i18n)
└── fess_indices/              # OpenSearch index mappings

src/main/webapp/WEB-INF/view/  # JSP templates
src/test/java/.../it/          # Integration tests (*Tests.java)
```

## Architecture Patterns

                throw new SsoMessageException(
                        messages -> messages.addErrorsFailedToProcessSsoRequest(UserMessages.GLOBAL_PROPERTY_KEY, e.getMessage()),
                        "Failed to process metadata.", e);
            }
        })
                .orElseThrow(() -> new SsoMessageException(
                        messages -> messages.addErrorsFailedToProcessSsoRequest(UserMessages.GLOBAL_PROPERTY_KEY, "Invalid state."),

        String details = testableJob.testFormatDetails(events);

        assertNotNull(details);
        // Max 50 events displayed, message truncated to 200 chars
        assertTrue(details.contains("Total: 100 event(s) (showing 50)"));
        assertTrue(details.contains("... and 50 more"));
        // Long messages should be truncated with "..."
        assertTrue(details.contains("..."));
    }

    @Test

                throwValidationError(messages -> {
                    addPasswordValidationError(messages, validationError);
                }, validationErrorLambda);
            }
        }
    }

    /**
     * Adds a password validation error message to the messages object based on the error key.
     *
     * @param messages the FessMessages object to add the error to

        private final String sessionId;
        private final ChatMessage message;
        private final List<Map<String, Object>> sources;

        /**
         * Creates a new chat result.
         *
         * @param sessionId the session ID
         * @param message the chat message
         * @param sources the list of source documents
         */

                logger.debug("FuzzyQuery: query={}, boost={}", query, boost);
            }
            return convertFuzzyQuery(context, fuzzyQuery, boost);
        }
        throw new InvalidQueryException(messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY),
                "Unknown q: " + query.getClass() + " => " + query);
    }

    /**

            if (queryCommand != null) {
                return queryCommand.execute(context, query, boost);
            }
            throw new InvalidQueryException(messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY),
                    "Unknown q: " + query.getClass() + " => " + query);
        };
    }

    /**
     * Interface for query processing filters.