### 2. Input Validation
- ✅ Consistent `validateInputStream()` usage
- ✅ Reduced code duplication
- ✅ Clear exception messages

### 3. Error Handling
- ✅ Archive extractors continue on partial failures
- ✅ Processing statistics in error messages
- ✅ Specific file names in error logs

### 4. Error Messages
- ✅ Encoding information in TextExtractor errors
- ✅ File type context in MS Office errors

            logger.warn("Failed to upload {}", form.uploadFile.getFileName(), e);
            throwValidationError(messages -> messages.addErrorsStorageFileUploadFailure(GLOBAL, form.uploadFile.getFileName()),
                    () -> asListHtml(encodeId(form.path)));

        }
        saveInfo(messages -> messages.addSuccessUploadFileToStorage(GLOBAL, form.uploadFile.getFileName()));

            });
            saveInfo(messages -> messages.addSuccessSendTestmail(GLOBAL));
            updateProperty(Constants.NOTIFICATION_TO_PROPERTY, form.notificationTo);
            systemProperties.store();
        } catch (final Exception e) {
            logger.warn("Failed to send a test mail.", e);
            saveError(messages -> messages.addErrorsFailedToSendTestmail(GLOBAL));
        }

                throw new InvalidQueryException(messages -> messages.addErrorsInvalidQuerySortValue(UserMessages.GLOBAL_PROPERTY_KEY, text),
                        "Invalid sort field: " + termQuery);
            }
            final String sortField = values[0];
            if (!getQueryFieldConfig().isSortField(sortField)) {
                throw new InvalidQueryException(

                logger.warn("Failed to delete temporary file: {}", tempFile.getAbsolutePath());
            }
            throwValidationError(messages -> messages.addErrorsFileIsNotSupported(GLOBAL, fileName), this::asListHtml);
        }
        saveInfo(messages -> messages.addSuccessBulkProcessStarted(GLOBAL));
        return redirect(getClass()); // no-op
    }

    /**
     * Import the file asynchronously.

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

    /**
     * Converts a phrase query to a query builder.
     *

        validate(form, messages -> {}, this::asDetailsHtml);
        verifyToken(this::asDetailsHtml);
        final String id = form.id;
        failureUrlService.getFailureUrl(id).alwaysPresent(entity -> {
            failureUrlService.delete(entity);
            saveInfo(messages -> messages.addSuccessCrudDeleteCrudTable(GLOBAL));
        });
        return redirect(getClass());

        verifyCrudMode(form.crudMode, CrudMode.DETAILS, this::asListHtml);
        validate(form, messages -> {}, this::asDetailsHtml);
        verifyToken(this::asDetailsHtml);
        final String id = form.id;
        jobLogService.getJobLog(id).alwaysPresent(entity -> {
            jobLogService.delete(entity);
            saveInfo(messages -> messages.addSuccessCrudDeleteCrudTable(GLOBAL));
        });
        return redirect(getClass());

        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."));
        }

/**
 * Base class for transport-layer messages in the jCIFS network communication.
 * Provides common functionality for message handling and processing.
 *
 * @author mbechler
 */
public interface Message {

    /**
     * Indicate that this message should retain it's raw payload
     */
    void retainPayload();

    /**
     * Determines whether to retain the message payload.
     *