// By default, split them by CROSS_VERSION_BUCKETS
    override fun createFunctionalTestsFor(stage: Stage, testCoverage: TestCoverage): List<FunctionalTest> {
        return buckets.mapIndexed { index, bucket -> bucket.createFunctionalTestsFor(model, stage, testCoverage, index + 1) }
    }
}

class StatisticBasedFunctionalTestBucketProvider(val model: CIBuildModel, testBucketsJson: File) : FunctionalTestBucketProvider {