code: public void putAll(List<IPRangeNode<Map>> children) {
  
  	for (IPRangeNode child: children) {
  
  	    this.put(child, false); // pass false for optimized insertion performance
  	}
      }
docs: puts all the children at the IPv4 or IPv6 nodes for fast insertion. this method does not look for
  a more accurate insertion point and is useful when adding many items at once, e.g. for Country
  Codes of all known IP ranges
  
  @param children