modTime  time.Time
		days     ExpirationDays
		expected time.Time
	}{
		{
			time.Date(2020, time.March, 15, 10, 10, 10, 0, time.UTC),
			4,
			time.Date(2020, time.March, 20, 0, 0, 0, 0, time.UTC),
		},
		{
			time.Date(2020, time.March, 15, 0, 0, 0, 0, time.UTC),
			1,
			time.Date(2020, time.March, 17, 0, 0, 0, 0, time.UTC),
		},
	}

	for i, tc := range testCases {

		},
		{
			name:       "date_diff_month",
			query:      `SELECT date_diff(MONTH, '2019-10-20T', '2020-01-20T') FROM S3Object LIMIT 1`,
			wantResult: `{"_1":3}`,
		},
		{
			name:       "date_diff_month_neg",
			query:      `SELECT date_diff(MONTH, '2020-01-20T', '2019-10-20T') FROM S3Object LIMIT 1`,
			wantResult: `{"_1":-3}`,
		},

        final List<LlmMessage> history = new ArrayList<>();
        history.add(LlmMessage.user("Q1")); // 2 chars
        history.add(LlmMessage.assistant("A".repeat(200))); // 200 chars - too large
        history.add(LlmMessage.user("Q2")); // 2 chars
        history.add(LlmMessage.assistant("A2")); // 2 chars
        final LlmChatRequest request = new LlmChatRequest();