ActivityWaitanySimcall(ActorImpl* actor, const std::vector<activity::ActivityImpl*>& activities, double timeout);
bool is_enabled() override;
void serialize(std::stringstream& stream) const override;
ActivityWaitanySimcall(ActorImpl* actor, const std::vector<activity::ActivityImpl*>& activities, double timeout);
bool is_enabled() override;
void serialize(std::stringstream& stream) const override;