h := obj.Hash()
	o.objSlice = append(o.objSlice, obj)
	if o.objMap == nil {
		o.objMap = make(map[string]*object.K8sObject)
	}
	o.objMap[h] = obj
	o.keySlice = append(o.keySlice, h)
}

// size reports the length of o.
func (o *ObjectSet) size() int {
	return len(o.keySlice)
}

// nameMatches returns a subset of o where objects names match the given regex.
func (o *ObjectSet) nameMatches(nameRegex string) *ObjectSet {