docs: private User createAccount(StaplerRequest req, StaplerResponse rsp, boolean validateCaptcha, String formView) throws ServletException, IOException {
          SignupInfo si = validateAccountCreationForm(req, validateCaptcha);
  
          if (!si.errors.isEmpty()) {
              // failed. ask the user to try again.
              req.getView(this, formView).forward(req, rsp);
              return null;
          }
  
          return createAccount(si);
      }