成员的完整列表，这些成员属于 eve::game_event::GameEvent,包括所有继承而来的类成员

causation	eve::game_event::GameEvent
correlation	eve::game_event::GameEvent
eventId	eve::game_event::GameEvent
flags	eve::game_event::GameEvent
payload	eve::game_event::GameEvent
schemaId	eve::game_event::GameEvent
schemaVersion	eve::game_event::GameEvent
sequence	eve::game_event::GameEvent
source	eve::game_event::GameEvent
subject	eve::game_event::GameEvent
tick	eve::game_event::GameEvent
type	eve::game_event::GameEvent