presto-main/src/main/java/io/prestosql/operator/aggregation/DecimalSumAggregation.java/DecimalSumAggregation/DecimalSumAggregation
class DecimalSumAggregation:    public DecimalSumAggregation()
    {
        super(
                new FunctionMetadata(
                        new Signature(
                                NAME,
                                new TypeSignature("decimal", numericParameter(38), typeVariable("s")),
                                ImmutableList.of(new TypeSignature("decimal", typeVariable("p"), typeVariable("s")))),
                        true,
                        ImmutableList.of(new FunctionArgumentDefinition(false)),
                        false,
                        true,
                        "Calculates the sum over the input values",
                        AGGREGATE),
                true,
                false);
    }