static simgrid::xbt::Extension<simgrid::s4u::Link, LinkEnergyWifi> EXTENSION_ID;
explicit LinkEnergyWifi(simgrid::s4u::Link* ptr) : link_(ptr) {}
static simgrid::xbt::Extension<simgrid::s4u::Link, LinkEnergyWifi> EXTENSION_ID;
explicit LinkEnergyWifi(simgrid::s4u::Link* ptr) : link_(ptr) {}