-VirtualMachine::VirtualMachine(HostModel *model, const char *name, xbt_dict_t props, simgrid::s4u::Host *hostPM)
-: HostImpl(model, name, props, NULL, NULL, NULL)
-, p_hostPM(hostPM)
+VirtualMachine::VirtualMachine(HostModel *model, const char *name, simgrid::s4u::Host *hostPM)
+: HostImpl(model, name, nullptr, nullptr, nullptr)
+, hostPM_(hostPM)