docs: public StartRemediationExecutionResult withFailedItems(ResourceKey... failedItems) {
          if (this.failedItems == null) {
              setFailedItems(new com.amazonaws.internal.SdkInternalList<ResourceKey>(failedItems.length));
          }
          for (ResourceKey ele : failedItems) {
              this.failedItems.add(ele);
          }
          return this;
      }