SubelementContainer<0> specialization for unknown number of subelements

template<typename IndexType>

class SubelementContainer<IndexType, 0> : public std::vector<IndexType> {

class SubelementContainer<IndexType, 0> : public std::vector<Subelement<IndexType>> {

public:

    IndexType getNumberOfSubelements() {

        return this->size();

    }

    void addSubelement(IndexType index) {

        this->push_back(index);

        this->push_back(Subelement<IndexType>{index});

    }

    void removeSubelement(unsigned char atIndex){