public UpdateCampaignRequest withCampaignId(String campaignId) {
        setCampaignId(campaignId);
        return this;
    }
<p>
The unique identifier for the campaign.
</p>

@param campaignId
       The unique identifier for the campaign.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/UpdateCampaignRequest.java