presto-main/src/main/java/io/prestosql/cost/CostCalculatorWithEstimatedExchanges.java/CostCalculatorWithEstimatedExchanges/calculateLocalRepartitionCost
class CostCalculatorWithEstimatedExchanges:    public static LocalCostEstimate calculateLocalRepartitionCost(double inputSizeInBytes)
    {
        return LocalCostEstimate.ofCpu(inputSizeInBytes);
    }