Set ground truths in SummarizedBenchmark object

Method to set groundTruths in SummarizedBenchmark object.

groundTruths(object, ...) <- value

# S4 method for SummarizedBenchmark
groundTruths(object, ...) <- value

Arguments

object	a `SummarizedBenchmark` object.
...	futher arguments, perhaps used by methods.
value	replacement set of ground truths.

modified BenchDesign object