Java – cloud endpoint collection parameters

I'm using Google App Engine cloud endpoints. I'm trying to receive a collection parameter

This:

public List<Pair> initializationSetup(Pair pPair){}

Works, but if I try to receive a list of pairs, it will not be created API file

public List<Pair> initializationSetup(List<Pair> pPairs){

thank you

Solution

Cloud endpoints only handles classes with bean standards

So I created a new class called objectlistcontainer:

public class ObjectListContainer {
    public List<Object> getObjectsList() {
        return ObjectsList;
    }
    public void setObjectsList(List<Object> objectsList) {
        ObjectsList = objectsList;
    }
    private List<Object> ObjectsList;
}

The same problem, if you try to return a string, you can't You must create a stringcontainer