}).orElse(() -> {
                throw new FessUserNotFoundException(username);
            });
        }

    }

    /**
     * Deletes a user from the system.
     * Removes the user from both the authentication manager and the database.
     *
     * @param user the user entity to delete
     */
    public void delete(final User user) {

  private var lastTimestampNs: Long? = null

  /** Confirm that the thread does not hold a lock on `lock` during the callback. */
  fun forbidLock(lock: Any) {
    forbiddenLocks.add(lock)
  }

  /**
   * Removes recorded events up to (and including) an event is found whose class equals [eventClass]
   * and returns it.
   */
  fun <T : CallEvent> removeUpToEvent(eventClass: Class<T>): T {

        }).createPageNumberList());

        return dataConfigList;
    }

    /**
     * Deletes the specified data configuration from the system.
     *
     * <p>This operation permanently removes the data configuration and
     * immediately refreshes the index to ensure the change is visible.</p>
     *
     * @param dataConfig the data configuration to delete

        return context != null ? context.getCurrentHash() : null;
    }

    /**
     * Finalizes and removes the preauth integrity context for a session.
     *
     * @param sessionId the session identifier
     */
    public void finalizeSession(String sessionId) {
        PreauthIntegrityContext context = sessionContexts.remove(sessionId);
        if (context != null) {
            context.invalidate();

        // Test forward slash normalization
        assertEquals("\\share\\folder", validator.validatePath("/share/folder"));

        // Test duplicate slash removal
        assertEquals("\\share\\folder", validator.validatePath("\\\\share\\\\folder"));

        // Test trailing slash removal
        assertEquals("\\share\\folder", validator.validatePath("\\share\\folder\\"));
    }

    @Test

        return ComponentUtil.getPluginHelper().getArtifact(values[0], values[1]);
    }

    /**
     * Installs the specified artifact in a background thread.
     * Also removes any previously installed versions of the same plugin.
     *
     * @param artifact the artifact to install
     */
    public static void installArtifact(final Artifact artifact) {
        new Thread(() -> {

    }

    /**
     * Sanitizes a string for safe logging (removes control characters)
     *
     * @param input the string to sanitize
     * @return sanitized string safe for logging
     */
    public static String sanitizeForLogging(String input) {
        if (input == null) {
            return "null";
        }
        // Remove control characters and limit length

        } finally {
          unlock();
        }
      }
    }

    /**
     * Removes an entry from within a table. All entries following the removed node can stay, but
     * all preceding ones need to be cloned.
     *
     * <p>This method does not decrement count for the removed entry, but does decrement count for

          current = null;
        } else {
          current = current.succ();
        }
        return result;
      }

      @Override
      public void remove() {
        checkState(prevEntry != null, "no calls to next() since the last call to remove()");
        setCount(prevEntry.getElement(), 0);
        prevEntry = null;
      }
    };
  }

  @Override
  Iterator<Entry<E>> descendingEntryIterator() {

      while (openClientSocket.hasNext()) {
        openClientSocket.next().closeQuietly()
        openClientSocket.remove()
      }

      val httpConnection = openConnections.iterator()
      while (httpConnection.hasNext()) {
        httpConnection.next().closeQuietly()
        httpConnection.remove()
      }
      dispatcher.close()
    }
  }

  @Throws(Exception::class)