session.addUserMessage("User 3");
        session.addAssistantMessage("Assistant 3");
        assertEquals(6, session.getMessageCount());

        // Trimming to 3 would start at index 3 (assistant), so it should go back to index 2 (user)
        session.trimHistory(3);

        final List<ChatMessage> messages = session.getMessages();
        assertEquals(4, messages.size());

        assertNull(languageHelper.detectLanguage("   "));
    }

    @Test
    public void test_detectLanguage_withoutDetector() {
        // Without a real detector, this would cause NullPointerException
        try {
            languageHelper.detectLanguage("This is English text");
            fail("Should throw NullPointerException without detector");
        } catch (NullPointerException e) {

   * we wanted to support legacy classes that implement the raw type {@code Comparable} (instead of
   * implementing {@code Comparable<Foo>}) without producing warnings. If so, we would prefer today
   * to produce warnings in that case, and we may change this method to do so in the future. Support
   * for raw {@code Comparable} types in Guava in general is tracked as <a

    # For forms and file uploads
    "python-multipart >=0.0.18",
    # For Starlette's SessionMiddleware, not commonly used with FastAPI
    "itsdangerous >=1.1.0",
    # For Starlette's schema generation, would not be used with FastAPI
    "pyyaml >=5.3.1",
    # To validate email fields
    "email-validator >=2.0.0",
    # Uvicorn with uvloop
    "uvicorn[standard] >=0.12.0",
    # Settings management

         * inserts checks automatically for non-private functions (which are the only kind that we
         * check).
         *
         * We *would* just check such functions redundantly, but kotlinc emits its nullness
         * annotations in the form of JetBrains annotations, which have only class retention and

    this.lowerBoundType = checkNotNull(lowerBoundType);
    this.upperEndpoint = upperEndpoint;
    this.upperBoundType = checkNotNull(upperBoundType);

    // Trigger any exception that the comparator would throw for the endpoints.
    /*
     * uncheckedCastNullableTToT is safe as long as the callers are careful to pass a "real" T
     * whenever they pass `true` for the matching `has*Bound` parameter.
     */

        // When & Then - verify empty collection behavior
        assertFalse(emptyIterator.hasNext(), "Empty iterator should have no next element");

        // Note: Standard Iterator would throw NoSuchElementException, but this implementation returns null
        // This is a design choice for this specific implementation
        assertNull(emptyIterator.next(), "This implementation returns null instead of throwing");

                log.debug("Error releasing tree connection during emergency cleanup", e);
            }

            // Note: resourceLoc is final, cannot be set to null
            // Clear other mutable references would go here

        } catch (Exception e) {
            log.error("Failed to perform emergency tree handle cleanup", e);
        }
    }

    /**
     * {@inheritDoc}
     *

// least `max_values`.
//
// The elements of values will point to addresses in `storage` which must be at
// least `storage_size` bytes in length.  Ideally, max_values would be set to
// TF_AttrMetadata.list_size and `storage` would be at least
// TF_AttrMetadata.total_size, obtained from TF_OperationGetAttrMetadata(oper,
// attr_name).
//
// Fails if storage_size is too small to hold the requested number of strings.

        }
    }

    @Test
    public void test_scroll_callbackHandling() {
        // This test verifies the scroll method exists and handles callbacks properly
        // Note: In a real test environment, this would require proper SearchEngineClient setup
        // For now, we test that the method signature is correct and can be called

        AtomicInteger callbackCount = new AtomicInteger(0);

        try {