return functionScoreQuery;
    }

    protected BoolQueryBuilder regBoolCQ(List<QueryBuilder> mustList, List<QueryBuilder> shouldList, List<QueryBuilder> mustNotList,
            List<QueryBuilder> filterList) {
        assertObjectNotNull("mustList", mustList);
        assertObjectNotNull("shouldList", shouldList);
        assertObjectNotNull("mustNotList", mustNotList);
        assertObjectNotNull("filterList", filterList);

        return functionScoreQuery;
    }

    protected BoolQueryBuilder regBoolCQ(List<QueryBuilder> mustList, List<QueryBuilder> shouldList, List<QueryBuilder> mustNotList,
            List<QueryBuilder> filterList) {
        assertObjectNotNull("mustList", mustList);
        assertObjectNotNull("shouldList", shouldList);
        assertObjectNotNull("mustNotList", mustNotList);
        assertObjectNotNull("filterList", filterList);

        return functionScoreQuery;
    }

    protected BoolQueryBuilder regBoolCQ(List<QueryBuilder> mustList, List<QueryBuilder> shouldList, List<QueryBuilder> mustNotList,
            List<QueryBuilder> filterList) {
        assertObjectNotNull("mustList", mustList);
        assertObjectNotNull("shouldList", shouldList);
        assertObjectNotNull("mustNotList", mustNotList);
        assertObjectNotNull("filterList", filterList);

            it.remove();
        }

        warnAboutCleanup = false;
    }

    public void assertFileExistence(File dir, String filename, boolean shouldExist) {
        File file = new File(dir, filename);

        if (shouldExist) {
            assertTrue(file.exists());
        } else {
            assertFalse(file.exists());
        }
    }

		}
	}
	var deleted [len(versions)]bool
	checkVerExist := func(t testing.TB) {
		t.Helper()
		for i := range versions {
			shouldExist := !deleted[i]
			fi, err := xl.ReadVersion(ctx, "", volume, object, versions[i], ReadOptions{})
			if shouldExist {
				if err != nil {
					t.Fatalf("Version %s should exist, but got err %v", versions[i], err)
				}
				return
			}