assertNotNull(result1);
        assertNotNull(result2);

        // Both results should be of the same type
        assertTrue(result1 instanceof MatchAllQueryBuilder);
        assertTrue(result2 instanceof MatchAllQueryBuilder);

        // Both should generate the same JSON
        String json1 = result1.toString().replaceAll("[\\s\\n]", "");

        // Verify inheritance chain
        assertTrue(queryParseException instanceof QueryParseException);
        assertTrue(queryParseException instanceof FessSystemException);
        assertTrue(queryParseException instanceof RuntimeException);
        assertTrue(queryParseException instanceof Exception);
        assertTrue(queryParseException instanceof Throwable);
    }

    @Test
    public void test_nullHandling() {

        SsoProcessException ssoException = new SsoProcessException("Test SSO error");

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

    @Test
    public void test_constructor_withVariousExceptionTypes() {

        QueryBuilder result = queryCommand.convertPhraseQuery(context, phraseQuery, 1.0f);

        assertNotNull(result);
        assertTrue(result instanceof MatchPhraseQueryBuilder);

        // Verify query was processed
        assertNotNull(result);
        assertTrue(result instanceof MatchPhraseQueryBuilder);
    }

    @Test
    public void test_convertPhraseQuery_unknownField() {

        } catch (Exception e) {
            // Expected - utility classes should have private constructors
            assertTrue(e instanceof IllegalAccessException || e.getCause() instanceof IllegalAccessException
                    || e instanceof InstantiationException);
        }
    }

    @Test
    public void test_constants_and_static_methods() {
        // Verify all public static methods exist

        // Verify the cause chain
        Throwable cause1 = exception.getCause();
        assertTrue(cause1 instanceof RuntimeException);

        Throwable cause2 = cause1.getCause();
        assertTrue(cause2 instanceof AssertionError);

        Throwable cause3 = cause2.getCause();
        assertTrue(cause3 instanceof NullPointerException);
    }

    @Test

        // Test that ThumbnailGenerationException is an instance of FessSystemException
        ThumbnailGenerationException exception = new ThumbnailGenerationException("Test");

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

    @Test

        ResultOffsetExceededException exception = new ResultOffsetExceededException("Test message");

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

    @Test
    public void test_serialization() {
        // Test serialVersionUID exists

        // Check inheritance chain
        assertTrue(exception instanceof CommandExecutionException);
        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);

        // Should be runtime exception (unchecked), not an Error

        DataStoreException exception = new DataStoreException("Test");

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

    @Test
    public void test_throwAndCatch() {