code: public java.util.List<DeferredMaintenanceWindow> getDeferredMaintenanceWindows() {
          if (deferredMaintenanceWindows == null) {
              deferredMaintenanceWindows = new com.amazonaws.internal.SdkInternalList<DeferredMaintenanceWindow>();
          }
          return deferredMaintenanceWindows;
      }
docs: <p>
  Describes a group of <code>DeferredMaintenanceWindow</code> objects.
  </p>
  
  @return Describes a group of <code>DeferredMaintenanceWindow</code> objects.