predicate.setValues(new String[] {adGroupId});
selector.setPredicates(new Predicate[] {predicate});
selector.setFields(new String[]{"AdGroupId", "CriterionId", "InsertionText", "ParamIndex"});
// Get all ad parameters.
AdParamPage page = adParamService.get(selector);
// Display ad parameters.
if (page.getEntries() != null && page.getEntries().length > 0) {
for (AdParam adParam : page.getEntries()) {
System.out.println("Ad parameter with ad group id \"" + adParam.getAdGroupId()
+ "\", criterion id \"" + adParam.getCriterionId()
+ "\", insertion text \"" + adParam.getInsertionText()
+ "\", and parameter index \"" + adParam.getParamIndex()
+ "\" was found.");