public virtual void UnSubscribeToClientParcelEvents(IClientAPI client)
{
client.OnObjectGroupRequest -= m_sceneGraph.HandleObjectGroupUpdate;
client.OnParcelReturnObjectsRequest -= LandChannel.ReturnObjectsInParcel;
client.OnParcelSetOtherCleanTime -= LandChannel.SetParcelOtherCleanTime;
client.OnParcelBuy -= ProcessParcelBuy;
}