static void handler_OnWhoHas(BacnetClient sender, BacnetAddress adr, int low_limit, int high_limit, BacnetObjectId ObjId, string ObjName)
        {
            if (low_limit != -1 && deviceId < low_limit)
            {
                return;
            }
            else if (high_limit != -1 && deviceId > high_limit)
            {
                return;
            }

            BaCSharpObject o;

            if (ObjName == null)
            {
                o = device.FindBacnetObject(ObjId);
            }
            else
            {
                o = device.FindBacnetObject(ObjName);
            }

            if (o != null)
            {
                sender.IHave(device.m_PROP_OBJECT_IDENTIFIER, ObjId, o.m_PROP_OBJECT_NAME);
            }
        }