code: public DomainList getCollectionDomains(Date date, String collectionId, int perPage, int page) throws FlickrException {
          return getDomains(METHOD_GET_COLLECTION_DOMAINS, "collection_id", collectionId, date, perPage, page);
      }
docs: Get a list of referring domains for a collection.
  
  @param date
  (Required) Stats will be returned for this date. A day according to Flickr Stats starts at midnight GMT for all users, and timestamps will
  automatically be rounded down to the start of the day.
  @param collectionId
  (Optional) The id of the collection to get stats for. If not provided, stats for all collections will be returned.
  @param perPage
  (Optional) Number of domains to return per page. If this argument is omitted, it defaults to 25. The maximum allowed value is 100.
  @param page
  (Optional) The page of results to return. If this argument is omitted, it defaults to 1.
  @see "http://www.flickr.com/services/api/flickr.stats.getCollectionDomains.html"