实验性实验性Registers a new event receiver for this particular type of event.
无法在只读模式下调用此函数，详见 WorldBeforeEvents。
This function can be called in early-execution mode.
实验性De-registers an event receiver for the player spawn event.
无法在只读模式下调用此函数，详见 WorldBeforeEvents。
This function can be called in early-execution mode.
Registers an event when a player is spawned (or re-spawned after death) and fully ready within the world.