super(message, cause);
        this.errorCode = errorCode;
    }

    /**
     * Gets the error code.
     *
     * @return the error code
     */
    public String getErrorCode() {
        return errorCode;
    }

        assertEquals(LlmException.ERROR_UNKNOWN, exception.getErrorCode());
    }

    @Test
    public void test_constructorWithMessageAndCauseDefaultsToUnknownErrorCode() {
        final RuntimeException cause = new RuntimeException("Root cause");
        final LlmException exception = new LlmException("Error occurred", cause);
        assertEquals(LlmException.ERROR_UNKNOWN, exception.getErrorCode());
    }

    @Test