Yes, is optional, but applications that use the information typically treat -1 as "unknown"
~Burn On Mon, Oct 7, 2013 at 9:15 AM, Renaud Richardet <[email protected]>wrote: > Hi Armin, > Just return null. I rarely implement that method... > Best, Renaud > > > On Sat, Oct 5, 2013 at 11:44 AM, Dr. Armin Wegner < > [email protected]> wrote: > > > What to return from method Progress of CasCollectionReader_ImplBase > > when I do not know the total number of artifacts? > > >
