code: private void fillHasLiked(JsonObject summary) {
      if (summary != null && summary.get("has_liked") != null) {
        hasLiked = summary.get("has_liked").asBoolean();
      }
  
      if (hasLiked == null && openGraphUserLikes != null) {
        hasLiked = openGraphUserLikes;
      }
    }
docs: fill <code>has_liked</code> from summary, in case of open graph object use user_likes instead