assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    @Test
    public void test_serialization() {
        // Test serialVersionUID exists
        ResultOffsetExceededException exception = new ResultOffsetExceededException("Test serialization");

        private final String throwable;

        /**
         * Constructs a new LogNotificationEvent.
         *
         * @param timestamp the event timestamp in milliseconds
         * @param level the log level name
         * @param loggerName the logger name
         * @param message the log message
         * @param throwable the throwable string, or null
         */

     * Creates a new exception with the specified message and cause.
     *
     * @param message the error message
     * @param cause the cause of the exception
     */
    public LlmException(final String message, final Throwable cause) {
        super(message, cause);
        errorCode = ERROR_UNKNOWN;
    }

    /**
     * Creates a new exception with the specified message and error code.
     *
     * @param message the error message

        // Create multiple threads to test synchronized method
        Thread thread1 = new Thread(() -> {
            Throwable result = exception.fillInStackTrace();
            assertNull(result);
        });

        Thread thread2 = new Thread(() -> {
            Throwable result = exception.fillInStackTrace();
            assertNull(result);
        });

        thread1.start();

                assertNotNull(result);
            } catch (Exception e) {
                // Expected behavior when components are not fully initialized
                Throwable cause = e.getCause();
                assertNotNull(cause);
            }
        } catch (Exception e) {
            // Test setup exception is acceptable
            assertNotNull(e);
        }
    }

        DictionaryExpiredException exception = new DictionaryExpiredException();
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    @Test
    public void test_throwAndCatch() {
        // Test throwing and catching the exception
        try {
            throw new DictionaryExpiredException();

      "type": "keyword"
    },
    "level": {
      "type": "keyword"
    },
    "loggerName": {
      "type": "keyword"
    },
    "message": {
      "type": "text",
      "index": false
    },
    "throwable": {
      "type": "text",
      "index": false
    },
    "timestamp": {
      "type": "date",
      "format": "epoch_millis"
    }
  }

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    @Test
    public void test_throwAndCatch() {
        // Test throwing and catching the exception
        String expectedType = "OAuth";
        String expectedMessage = "OAuth token is invalid";

    }

    @Test
    public void test_constructorWithNullCause() {
        // Test constructor with null cause
        SearchQueryException exception = new SearchQueryException((Throwable) null);

        assertNull(exception.getCause());
        assertNull(exception.getMessage());
        assertTrue(exception instanceof FessSystemException);
    }

    @Test

            return null;
        }

        @Override
        public void log(String msg) {
        }

        @Override
        public void log(String message, Throwable throwable) {
        }

        @Override
        public String getServerInfo() {
            return null;
        }

        @Override
        public String getInitParameter(String name) {