128     void Add(const T value) { items_.push_back(value); }  in Add()
132       return builder->CreateVector(items_).o;  in Serialize()
136     std::vector<T> items_;
143     void Add(const std::string& value) { items_.push_back(value); }  in Add()
148           items_.size());  in Serialize()
149       for (int i = 0; i < items_.size(); i++) {  in Serialize()
150         offsets[i] = builder->CreateString(items_[i]);  in Serialize()
156     std::vector<std::string> items_;
169       items_.emplace_back(new ReflectiveFlatbuffer(  in Add()
171       return items_.back().get();  in Add()
176       std::vector<flatbuffers::Offset<void>> offsets(items_.size());  in Serialize()
177       for (int i = 0; i < items_.size(); i++) {  in Serialize()
178         offsets[i] = items_[i]->Serialize(builder);  in Serialize()
186     std::vector<std::unique_ptr<ReflectiveFlatbuffer>> items_;  variable