want := make([]Level3, 2)
	want[0] = Level3{
		Level2s: []Level2{
			{Level1: Level1{Value: "value1"}},
			{Level1: Level1{Value: "value2"}},
		},
	}
	if err := DB.Create(&want[0]).Error; err != nil {
		t.Error(err)
	}

	want[1] = Level3{
		Level2s: []Level2{
			{Level1: Level1{Value: "value3"}},
			{Level1: Level1{Value: "value4"}},
		},
	}
	if err := DB.Create(&want[1]).Error; err != nil {

        String template = "${level1.level2.value}";
        Map<String, Object> paramMap = new HashMap<>();
        Map<String, Object> level2 = new HashMap<>();
        level2.put("value", "nested");
        Map<String, Object> level1 = new HashMap<>();
        level1.put("level2", level2);
        paramMap.put("level1", level1);

        Object result = scriptEngine.evaluate(template, paramMap);

        Exception level2 = new IllegalStateException("Level 2", level3);
        Exception level1 = new IOException("Level 1", level2);
        CrawlerSystemException topLevel = new CrawlerSystemException("Top level", level1);

        // Verify chain
        assertSame(level1, topLevel.getCause());
        assertSame(level2, topLevel.getCause().getCause());