// Choose a request:
kernel::actor::ActorImpl* actor = kernel::actor::ActorImpl::by_pid(transition->aid_);
xbt_assert(actor != nullptr, "Unexpected actor (id:%ld).", transition->aid_);
// Choose a request:
kernel::actor::ActorImpl* actor = kernel::actor::ActorImpl::by_pid(transition->aid_);
xbt_assert(actor != nullptr, "Unexpected actor (id:%ld).", transition->aid_);