static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL)),
static_cast<CpuPtr>(xbt_lib_get_or_null(host_lib, name, SURF_CPU_LEVEL)));
static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL)),
static_cast<CpuPtr>(xbt_lib_get_or_null(host_lib, name, SURF_CPU_LEVEL)));