docs: public double getUpperBound(final int kappa) {
      if (!hasHip(mem)) {
        return getIconConfidenceUB(PreambleUtil.getLgK(mem), getNumCoupons(mem), kappa);
      }
      return getHipConfidenceUB(PreambleUtil.getLgK(mem), getNumCoupons(mem), getHipAccum(mem), kappa);
    }