public boolean satisfiedBy(long count, long totalCount) {
        if (fraction.isPresent()) {
            return count + 1e-9 >= totalCount * fraction.getAsDouble();
        }
        return count >= Math.min(minCount.orElse(0), totalCount);
    }
Returns whether this slice is satisfied by given node count, out of totalCount
config-provisioning/src/main/java/com/yahoo/config/provision/zone/NodeSlice.java