code: public java.util.List<ManagedActionHistoryItem> getManagedActionHistoryItems() {
          if (managedActionHistoryItems == null) {
              managedActionHistoryItems = new com.amazonaws.internal.SdkInternalList<ManagedActionHistoryItem>();
          }
          return managedActionHistoryItems;
      }
docs: <p>
  A list of completed and failed managed actions.
  </p>
  
  @return A list of completed and failed managed actions.