presto-main/src/main/java/io/prestosql/operator/aggregation/DoubleRegressionAggregation.java/DoubleRegressionAggregation/input
class DoubleRegressionAggregation:    @InputFunction
    public static void input(@AggregationState RegressionState state, @SqlType(StandardTypes.DOUBLE) double dependentValue, @SqlType(StandardTypes.DOUBLE) double independentValue)
    {
        updateRegressionState(state, independentValue, dependentValue);
    }