FromMessage
FromMessage(archive);
FromMessage(&settings);
void FromMessage(const BMessage* message);
static Condition* FromMessage(const BMessage& message);
static Event* FromMessage(const BMessenger& target,
Condition* condition = Conditions::FromMessage(conditions);
condition = Conditions::FromMessage(conditions);
event = Events::FromMessage(this, events);
Condition* condition = Conditions::FromMessage(message);