void HandleGroupInviteOpcode(WorldPacket& recvPacket);
void HandleGroupInviteResponseOpcode(WorldPacket& recvPacket);
void HandleGroupUninviteOpcode(WorldPacket& recvPacket);
void HandleGroupUninviteGuidOpcode(WorldPacket& recvPacket);
void HandleGroupSetLeaderOpcode(WorldPacket& recvPacket);
void HandleGroupDisbandOpcode(WorldPacket& recvPacket);
void HandleOptOutOfLootOpcode(WorldPacket& recv_data);