docs: public ResponseWrapper updateFriendsNote(String username, FriendNote[] array)
              throws APIConnectionException, APIRequestException {
          StringUtils.checkUsername(username);
          FriendNotePayload payload = new FriendNotePayload.Builder()
                  .setFriendNotes(array)
                  .build();
          Preconditions.checkArgument(null != payload, "FriendNotePayload should not be null");
          return _httpClient.sendPut(_baseUrl + userPath + "/" + username + "/friends", payload.toString());
      }