Google Directory API : getting UserEmail object using java client

Google Directory User object returned by Google has name attribute rightly as UserName object but emails attribute is of type ArrayList of E' and email properties are present as an ArrayMap in the first member of this list instead of coming as aUserEmail' object strangely.

In my case, I get to decide the type of attribute only run-time and hence I'm using Java Reflection as below.

String outerGetter = "get" + outerParam;

List<Object> outerValues = (List<Object>)ReflectionUtils.get(user, outerGetter);

if(outerValues == null){
    return null;
}
String innerGetter = "get" + upperFirstLetter(attrName.substring(firstDotIndex + 1));
for(Object outerValue: outerValues){
    JSONObject jo = new JSONObject();
    Object innerValue = ReflectionUtils.get(outerValue, innerGetter);
    if(innerValue == null){
        return null;
    }
    jo.put(scimAttribute.subName, innerValue);
    ja.put(jo);
}

ReflectionUtils.get(user, method) basically executes method of user and return Object type.

For name property : outerGetter is getName and innerGetter is say getFamilyName and it works fine.

But for emails property : outerGetter is getEmails and innerGetter is getAddress and it gives NoSuchMethodException: com.google.api.client.util.ArrayMap.getAddress(). getAddress() is part of UserEmail object and hence this exception I guess. Can anyone tell me why I'm not getting UserEmail object in the first place?.

I'm new to Reflection as well as Google Directory APIs. Any help is appreciated.