How keys (in AllFieldsTable) are presented, and, unlike what the
name suggests, also what rows are generated, since the grouping of
the measurements depends on the set of generated key
strings. (This only contains the runtime data, but unlike what the
name suggests, actually there is no static data for the key column
in the output? (PS. But there is the definition of the trait
KeyDetails below, can’t conflict with that.))
Marks a Stats over multiple (or at least 1, anyway) identical
benchmarking runs, to gain statistical insights. Stats.n
represents the number of runs for these, not the number of calls.