presto-main/src/main/java/io/prestosql/metadata/PolymorphicScalarFunctionBuilder.java/PolymorphicScalarFunctionBuilder/PolymorphicScalarFunctionBuilder
class PolymorphicScalarFunctionBuilder:    public PolymorphicScalarFunctionBuilder(Class<?> clazz)
    {
        this.clazz = clazz;
    }