List<CampaignEstimateRequest> campaignEstimateRequests =
new ArrayList<CampaignEstimateRequest>();
CampaignEstimateRequest campaignEstimateRequest = new CampaignEstimateRequest();
campaignEstimateRequest.setAdGroupEstimateRequests(
adGroupEstimateRequests.toArray(new AdGroupEstimateRequest[]{}));
Location unitedStates = new Location();
unitedStates.setId(2840L);
Language english = new Language();
english.setId(1000L);
campaignEstimateRequest.setCriteria(new Criterion[]{unitedStates, english});
campaignEstimateRequests.add(campaignEstimateRequest);