Constructs a new C09PacketHeldItemChange object with the specified slotId. slotId is an integer representing the inventory slot ID to which the player's held item should be changed.
getSlotId(): int
Returns the slot ID associated with this packet. The slot ID is an integer value that represents the inventory slot ID for the item change.
setSlotId(int slotId): void
Sets the slotId of the packet to a new one you provide.