ManualCPCAdGroupCriterionExperimentBidMultiplier adGroupCriterionExperimentBidMultiplier =
new ManualCPCAdGroupCriterionExperimentBidMultiplier();
adGroupCriterionExperimentBidMultiplier.setMaxCpcMultiplier(new BidMultiplier(1.5, null));
// Set experiment data to the ad group.
BiddableAdGroupCriterionExperimentData adGroupCriterionExperimentData =
new BiddableAdGroupCriterionExperimentData();
adGroupCriterionExperimentData.setExperimentId(experimentId);
adGroupCriterionExperimentData.setExperimentDeltaStatus(ExperimentDeltaStatus.MODIFIED);
adGroupCriterionExperimentData
.setExperimentBidMultiplier(adGroupCriterionExperimentBidMultiplier);
adGroupCriterion.setExperimentData(adGroupCriterionExperimentData);
// Create operation.
AdGroupCriterionOperation adGroupCriterionOperation = new AdGroupCriterionOperation();