AttributeFieldMapping linkUrlFieldMapping = new AttributeFieldMapping();
linkUrlFieldMapping.setFeedAttributeId(siteLinksData.linkUrlFeedAttributeId);
linkUrlFieldMapping.setFieldId(PLACEHOLDER_FIELD_SITELINK_URL);
// Create the FieldMapping and operation.
FeedMapping feedMapping = new FeedMapping();
feedMapping.setPlaceholderType(PLACEHOLDER_SITELINKS);
feedMapping.setFeedId(siteLinksData.siteLinksFeedId);
feedMapping.setAttributeFieldMappings(
new AttributeFieldMapping[] {linkTextFieldMapping, linkUrlFieldMapping});
FeedMappingOperation operation = new FeedMappingOperation();
operation.setOperand(feedMapping);
operation.setOperator(Operator.ADD);