docs: public void createNewUser(final KickflipCallback cb) {
          final String password = generateRandomPassword();
          post(NEW_USER, User.class, new KickflipCallback() {
              @Override
              public void onSuccess(final Response response) {
                  if (VERBOSE)
                      Log.i(TAG, "createNewUser response: " + response);
                  storeNewUserResponse((User) response, password);
                  postResponseToCallback(cb, response);
              }
  
              @Override
              public void onError(final KickflipException error) {
                  Log.w(TAG, "createNewUser Error: " + error);
                  postExceptionToCallback(cb, error);
              }
          });
      }