// Since this feed's feed items will be managed by AdWords,
// you must set its origin to ADWORDS.
placesFeed.setOrigin(FeedOrigin.ADWORDS);
// Create an operation to add the feed.
FeedOperation feedOperation = new FeedOperation();
feedOperation.setOperand(placesFeed);
feedOperation.setOperator(Operator.ADD);
// Add the feed. Since it is a system generated feed, AdWords will automatically:
// 1. Set up the FeedAttributes on the feed.
// 2. Set up a FeedMapping that associates the FeedAttributes of the feed
// with the placeholder fields of the LOCATION placeholder type.