Method invoke

pj_datastore/src/plugin_data_host.cpp:1598–1608

  PluginFetchCtx& operator=(PluginFetchCtx&&) = delete;

  [[nodiscard]] std::vector<uint8_t> invoke() const {
    if (fetch_fn_ == nullptr) {
      return {};
    }
    const uint8_t* data = nullptr;
    uint64_t size = 0;  // matches PJ_lazy_fetch_fn_t out_size (uint64_t*)
    if (!fetch_fn_(ctx_, &data, &size) || data == nullptr) {
      return {};
    }
    return std::vector<uint8_t>(data, data + size);
  }

 private:
  PJ_lazy_fetch_fn_t fetch_fn_;