}
      return null;
    }
  }

  private static final class InCompletionOrderState<T extends @Nullable Object> {
    // A happens-before edge between the writes of these fields and their reads exists, because
    // in order to read these fields, the corresponding write to incompleteOutputCount must have
    // been read.
    private boolean wasCancelled = false;
    private boolean shouldInterrupt = true;

        }

        return abbreviateSite(url);
    }

    /**
     * Puts data into the result data map, handling value appending if configured.
     * If data appending is enabled and the key already exists, values are combined into arrays.
     *
     * @param dataMap the data map to modify
     * @param key the key to store the value under
     * @param value the value to store
     */

    checkNotNull(valueComparator);
    return Comparator.<Optional<T>, @Nullable T>comparing(
        o -> orElseNull(o), Comparator.nullsLast(valueComparator));
  }

  // For discussion of why this exists, see the Android flavor.
  private static <T> @Nullable T orElseNull(Optional<T> optional) {
    return optional.orElse(null);
  }

  /**

        // File system errors
        FILE_NOT_FOUND("File not found", ErrorCategory.FILE_SYSTEM, false), PATH_NOT_FOUND("Path not found", ErrorCategory.FILE_SYSTEM,
                false), FILE_EXISTS("File already exists", ErrorCategory.FILE_SYSTEM, false), DIRECTORY_NOT_EMPTY("Directory not empty",
                        ErrorCategory.FILE_SYSTEM, false), DISK_FULL("Disk full", ErrorCategory.RESOURCE,

        return isValid;
    }

    /**
     * Gets the current preauth hash for a session.
     *
     * @param sessionId the session identifier
     * @return the current hash, or null if no context exists
     */
    public byte[] getCurrentPreauthHash(String sessionId) {
        PreauthIntegrityContext context = sessionContexts.get(sessionId);
        return context != null ? context.getCurrentHash() : null;
    }

        // This should not throw an exception
        assertDoesNotThrow(() -> ntlmServlet.init(servletConfig));
    }

    /**
     * Test the service method when no Authorization header is present and no session exists.
     * Expects a 401 Unauthorized response with NTLM and Basic authentication challenges.
     * @throws ServletException
     * @throws IOException
     */
    @Test

        if (Files.isDirectory(filePath)) {
            filePath = filePath.resolve("index.html");
        }
        if (Files.exists(filePath)) {
            try (InputStream in = Files.newInputStream(filePath); ServletOutputStream out = response.getOutputStream()) {
                response.setStatus(HttpServletResponse.SC_OK);

errors.app.db.already.deleted = Mogelijk is het al verwijderd door een ander proces. Probeer de bewerking opnieuw.
errors.app.db.already.updated = Mogelijk is het al bijgewerkt door een ander proces. Probeer de bewerking opnieuw.
errors.app.db.already.exists = Gegevens bestaan al. Probeer de bewerking opnieuw.
errors.app.double.submit.request = Dit verzoek is mogelijk al verwerkt. Probeer de bewerking opnieuw.

errors.app.db.already.deleted = Возможно, он был удален другим процессом. Пожалуйста, попробуйте еще раз.
errors.app.db.already.updated = Возможно, он был обновлен другим процессом. Пожалуйста, попробуйте еще раз.
errors.app.db.already.exists = Данные уже существуют. Пожалуйста, попробуйте еще раз.
errors.app.double.submit.request = Возможно, он был обработан до этого запроса. Пожалуйста, попробуйте еще раз.

These types that have internal types are called "**generic**" types. And it's possible to declare them, even with their internal types.

To declare those types and the internal types, you can use the standard Python module `typing`. It exists specifically to support these type hints.

#### Newer versions of Python { #newer-versions-of-python }