rank = xbt_str_parse_int(simgrid::s4u::this_actor::name().c_str(),
"Any process of this example must have a numerical name, not %s");
my_mailbox = simgrid::s4u::Mailbox::byName(std::to_string(rank));
rank = xbt_str_parse_int(simgrid::s4u::this_actor::name().c_str(),
"Any process of this example must have a numerical name, not %s");
my_mailbox = simgrid::s4u::Mailbox::byName(std::to_string(rank));