fun getMinAndMaxTimestampForImport(importId: Long): Pair<Instant, Instant>? {
        val min = measuredAt.min()
        val max = measuredAt.max()
        return VoltageTable
            .select(min, max)
            .where(VoltageTable.importId eq importId)
            .firstOrNull()
            ?.let { Pair(it[min]!!, it[max]!!) }