if (link != nullptr && link->get_sharing_policy() == simgrid::s4u::Link::SharingPolicy::WIFI) {
auto* link_energy = link->extension<LinkEnergyWifi>();
XBT_DEBUG("Update %s on Comm Start/End", link->get_cname());
if (link != nullptr && link->get_sharing_policy() == simgrid::s4u::Link::SharingPolicy::WIFI) {
auto* link_energy = link->extension<LinkEnergyWifi>();
XBT_DEBUG("Update %s on Comm Start/End", link->get_cname());