OpeningMinCohortsOpeningMinCohorts opens backfill cohorts when the overall number of
cohorts treated so far in the trial reaches or exceeds a minimum threshold.
This can be used to implement a "delayed backfill cohort opening" rule.
OpeningMinCohorts(min_cohorts = 2L).DefaultOpeningMinCohorts()
(integer)
see slot definition.
min_cohorts(integer)
the minimum number of cohorts that must
have been treated before backfilling can be opened.
Opening and the other subclasses listed in there.