docs: public StartInstancesResult withStartingInstances(InstanceStateChange... startingInstances) {
          if (this.startingInstances == null) {
              setStartingInstances(new com.amazonaws.internal.SdkInternalList<InstanceStateChange>(startingInstances.length));
          }
          for (InstanceStateChange ele : startingInstances) {
              this.startingInstances.add(ele);
          }
          return this;
      }