docs: public DescribeEnvironmentManagedActionHistoryResult withManagedActionHistoryItems(ManagedActionHistoryItem... managedActionHistoryItems) {
          if (this.managedActionHistoryItems == null) {
              setManagedActionHistoryItems(new com.amazonaws.internal.SdkInternalList<ManagedActionHistoryItem>(managedActionHistoryItems.length));
          }
          for (ManagedActionHistoryItem ele : managedActionHistoryItems) {
              this.managedActionHistoryItems.add(ele);
          }
          return this;
      }