code: public BatchGetPartitionResult withUnprocessedKeys(PartitionValueList... unprocessedKeys) {
          if (this.unprocessedKeys == null) {
              setUnprocessedKeys(new java.util.ArrayList<PartitionValueList>(unprocessedKeys.length));
          }
          for (PartitionValueList ele : unprocessedKeys) {
              this.unprocessedKeys.add(ele);
          }
          return this;
      }
docs: <p>
  A list of the partition values in the request for which partions were not returned.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setUnprocessedKeys(java.util.Collection)} or {@link #withUnprocessedKeys(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param unprocessedKeys
  A list of the partition values in the request for which partions were not returned.
  @return Returns a reference to this object so that method calls can be chained together.