[Cgl] duplicate cuts

[Matthew Galati]

Is it a bug or a feature if in one pass of CGL Knapsack I get back the same
cut more than once? I am guessing there are different methods for generating
and lifting and it is possible to generate the same cut twice - and that the
generator itself does not check for dups? i.e., it leaves that up to the
client?

Or, if I see duplicate cuts, should I suspect a bug (either in CGL or in my
use of it)?

Thanks,
Matt
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