Not all attribute classes have all the attributes specified. The
SMPPValueHolder routines for parsing/writing were not tested/executed
and might contain issues. The sm_length/short_message was combined
into a single attribute as it is more like a LV. The question if
the >>readFrom:with: should read the length or not is something that
keeps on coming up. I need to have a more sane way of handling that.
Holger Hans Peter Freyther