 
   static func getTaggableFriends(limit : QueryLimit,
                                  handler: @escaping EnumerationCallback) {
-    enumerateFriends(type: .Taggable, limit: limit, cursor: nil,
+    enumerateFriends(type: .taggable, limit: limit, cursor: nil,
                      handler: handler)
   }
 
   static func getUserFriends(limit: QueryLimit,
                              handler: @escaping EnumerationCallback) {
-    enumerateFriends(type: .AppUsers, limit: limit, cursor: nil,
+    enumerateFriends(type: .appUsers, limit: limit, cursor: nil,
                      handler: handler)
   }
 

}

private enum FriendType {
  case Taggable
  case AppUsers
}

class Facebook {

      params["after"] = cursor!
    }

    let path = type == .taggable ? "me/taggable_friends" : "me/friends"
    let request = FBSDKGraphRequest(graphPath: path, parameters: params)
    _ = request?.start { (_: FBSDKGraphRequestConnection?,
                          result: Any?,
