The accept method delivers a deterministic message from the follower to the agent.
The accept_async method delivers an asynchronous (non-deterministic) message from the follower to the agent.
SIM_INTERFACE(follower_agent) {
void (*accept)(conf_object_t *obj, bytes_t msg);
void (*accept_async)(conf_object_t *obj, bytes_t msg);
};
#define FOLLOWER_AGENT_INTERFACE "follower_agent"