{
    using ResultValueType = typename Op::ResultType;
public:
    
    explicit AssociativeGenericApplierImpl(const ColumnRawPtrs & in)
        : val_getter{ValueGetterBuilder::build(in[in.size() - N])}, next{in} {}
    
    inline ResultValueType apply(const size_t i) const
    {
        const auto a = val_getter(i);
        if constexpr (Op::isSaturable())
            return Op::isSaturatedValueTernary(a) ? a : Op::apply(a, next.apply(i));
        else
            return Op::apply(a, next.apply(i));
    }
private:
    const TernaryValueGetter val_getter;
    const AssociativeGenericApplierImpl<Op, N - 1> next;
};
template <typename Op>
class AssociativeGenericApplierImpl<Op, 1>