#define CLASS_DEF(NAME, CID, VERSION)
associate a clid and a version to a type eg
TileCellIDC(bool createColl=false, SG::OwnershipPolicy ownPolicy=SG::VIEW_ELEMENTS)
TileRawDataContainer(bool createColl=false, TYPE type=TileFragHash::Digitizer, UNIT unit=TileRawChannelUnit::ADCcounts, SG::OwnershipPolicy ownPolicy=SG::OWN_ELEMENTS)
@ VIEW_ELEMENTS
this data object is a view, it does not own its elmts