presto-ml/src/main/java/io/prestosql/plugin/ml/EvaluateClassifierPredictionsStateFactory.java/EvaluateClassifierPredictionsStateFactory/getEstimatedSize
class EvaluateClassifierPredictionsStateFactory:        @Override
        public long getEstimatedSize()
        {
            return memoryUsage + truePositives.sizeOf() + falsePositives.sizeOf() + falseNegatives.sizeOf();
        }