presto-main/src/main/java/io/prestosql/type/DecimalOperators.java/DecimalOperators/decimalModulusOperator
class DecimalOperators:    private static SqlScalarFunction decimalModulusOperator()
    {
        Signature signature = modulusSignatureBuilder()
                .operatorType(MODULUS)
                .build();
        return modulusScalarFunction(signature);
    }