code: public CustomHeaders withItems(OriginCustomHeader... items) {
          if (this.items == null) {
              setItems(new com.amazonaws.internal.SdkInternalList<OriginCustomHeader>(items.length));
          }
          for (OriginCustomHeader ele : items) {
              this.items.add(ele);
          }
          return this;
      }
docs: <p>
  <b>Optional</b>: A list that contains one <code>OriginCustomHeader</code> element for each custom header that you
  want CloudFront to forward to the origin. If Quantity is <code>0</code>, omit <code>Items</code>.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setItems(java.util.Collection)} or {@link #withItems(java.util.Collection)} if you want to override the
  existing values.
  </p>
  
  @param items
  <b>Optional</b>: A list that contains one <code>OriginCustomHeader</code> element for each custom header
  that you want CloudFront to forward to the origin. If Quantity is <code>0</code>, omit <code>Items</code>.
  @return Returns a reference to this object so that method calls can be chained together.