func multiKeyToProto(appID string, key []*Key) []*pb.Reference {
	ret := make([]*pb.Reference, len(key))
	for i, k := range key {
		ret[i] = keyToProto(appID, k)
	}
	return ret
}
func multiKeyToProto(appID string, key []*Key) []*pb.Reference {
	ret := make([]*pb.Reference, len(key))
	for i, k := range key {
		ret[i] = keyToProto(appID, k)
	}
	return ret
}
func multiKeyToProto ( appID string , key [ ] * Key ) [ ] * pb . Reference { ret := make ( [ ] * pb . Reference , len ( key ) ) for i , k := range key { ret [ i ] = keyToProto ( appID , k ) } return ret }
// multiKeyToProto is a batch version of keyToProto.
multiKeyToProto is a batch version of keyToProto .