operation.setOperator(Operator.SET);
AdGroupCriterionOperation[] operations = new AdGroupCriterionOperation[] {operation};
// Update ad group criteria.
AdGroupCriterionReturnValue result = adGroupCriterionService.mutate(operations);
// Display ad group criteria.
if (result != null && result.getValue() != null) {
for (AdGroupCriterion adGroupCriterionResult : result.getValue()) {
if (adGroupCriterionResult instanceof BiddableAdGroupCriterion) {