docs: public AvailableCapacity withAvailableInstanceCapacity(InstanceCapacity... availableInstanceCapacity) {
          if (this.availableInstanceCapacity == null) {
              setAvailableInstanceCapacity(new com.amazonaws.internal.SdkInternalList<InstanceCapacity>(availableInstanceCapacity.length));
          }
          for (InstanceCapacity ele : availableInstanceCapacity) {
              this.availableInstanceCapacity.add(ele);
          }
          return this;
      }