// ============================== ADD ============================== public List<CampaignType> addCampaign(List<CampaignType> list) throws ApiException { AddCampaignRequest request = new AddCampaignRequest(); request.setCampaignTypes(list); CampaignService campaignService = commonService.getService(CampaignService.class); AddCampaignResponse response = campaignService.addCampaign(request); if (response == null) { try { TimeUnit.SECONDS.sleep(3); } catch (InterruptedException e) { e.printStackTrace(); } if (response != null) return response.getCampaignTypes(); } return Collections.emptyList(); }