code: public java.util.List<TargetGroupInfo> getTargetGroups() {
          if (targetGroups == null) {
              targetGroups = new com.amazonaws.internal.SdkInternalList<TargetGroupInfo>();
          }
          return targetGroups;
      }
docs: <p>
  One pair of target groups. One is associated with the original task set. The second is associated with the task
  set that serves traffic after the deployment is complete.
  </p>
  
  @return One pair of target groups. One is associated with the original task set. The second is associated with
  the task set that serves traffic after the deployment is complete.