Predicate campaignIdPredicate =
new Predicate("CampaignId", PredicateOperator.IN, new String[] {campaignId.toString()});
selector.setPredicates(new Predicate[] {campaignIdPredicate});
// Get all campaign ad extensions.
CampaignAdExtensionPage page = campaignAdExtensionService.get(selector);
// Display campaign ad extensions.
if (page.getEntries() != null && page.getEntries().length > 0) {
for (CampaignAdExtension campaignAdExtension : page.getEntries()) {
System.out.println("Campaign ad extension with campaign id \""
+ campaignAdExtension.getCampaignId() + "\", ad extension id \""
+ campaignAdExtension.getAdExtension().getId() + "\", and type \""
+ campaignAdExtension.getAdExtension().getAdExtensionType()
+ "\" was found.");