xbt_assert(traces_set_list.find(elm.first) != traces_set_list.end(), "Trace %s undefined", elm.first.c_str());
tmgr_trace_t trace = traces_set_list.at(elm.first);
sg_link_t link = simgrid::s4u::Link::byName(elm.second.c_str());
xbt_assert(traces_set_list.find(elm.first) != traces_set_list.end(), "Trace %s undefined", elm.first.c_str());
tmgr_trace_t trace = traces_set_list.at(elm.first);
sg_link_t link = simgrid::s4u::Link::byName(elm.second.c_str());