code: public BatchGetResourceConfigResult withUnprocessedResourceKeys(ResourceKey... unprocessedResourceKeys) {
          if (this.unprocessedResourceKeys == null) {
              setUnprocessedResourceKeys(new com.amazonaws.internal.SdkInternalList<ResourceKey>(unprocessedResourceKeys.length));
          }
          for (ResourceKey ele : unprocessedResourceKeys) {
              this.unprocessedResourceKeys.add(ele);
          }
          return this;
      }
docs: <p>
  A list of resource keys that were not processed with the current response. The unprocessesResourceKeys value is
  in the same form as ResourceKeys, so the value can be directly provided to a subsequent BatchGetResourceConfig
  operation. If there are no unprocessed resource keys, the response contains an empty unprocessedResourceKeys
  list.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setUnprocessedResourceKeys(java.util.Collection)} or
  {@link #withUnprocessedResourceKeys(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param unprocessedResourceKeys
  A list of resource keys that were not processed with the current response. The unprocessesResourceKeys
  value is in the same form as ResourceKeys, so the value can be directly provided to a subsequent
  BatchGetResourceConfig operation. If there are no unprocessed resource keys, the response contains an
  empty unprocessedResourceKeys list.
  @return Returns a reference to this object so that method calls can be chained together.