s4u::Link* create_link(const std::string& name, const std::vector<double>& bandwidths, double latency,
s4u::Link::SharingPolicy policy,
const std::unordered_map<std::string, std::string>* props) override;
s4u::Link* create_link(const std::string& name, const std::vector<double>& bandwidths, double latency,
s4u::Link::SharingPolicy policy,
const std::unordered_map<std::string, std::string>* props) override;