private val buckets: Map<TestCoverage, List<SmallSubprojectBucket>> = buildBuckets(testTimeDataJson, model)

    fun generate(jsonFile: File) {
        val output =
            buckets.map {
                TestCoverageAndBucketSplits(it.key.uuid, it.value.map { it.toJsonBucket() })
            }
        jsonFile.writeText(gson.toJson(output))
    }

    private fun buildBuckets(
        buildClassTimeJson: File,
        model: CIBuildModel,