FeedItemAttributeValue linkUrlAttributeValue = new FeedItemAttributeValue();
linkUrlAttributeValue.setFeedAttributeId(siteLinksData.linkUrlFeedAttributeId);
linkUrlAttributeValue.setStringValue(url);
// Create the feed item and operation.
FeedItem item = new FeedItem();
item.setFeedId(siteLinksData.siteLinksFeedId);
item.setAttributeValues(
new FeedItemAttributeValue[] {linkTextAttributeValue, linkUrlAttributeValue});
FeedItemOperation operation = new FeedItemOperation();
operation.setOperand(item);
operation.setOperator(Operator.ADD);
return operation;