code: @RequirePOST
      public void doCreateAccountByAdmin(StaplerRequest req, StaplerResponse rsp) throws IOException, ServletException {
          createAccountByAdmin(req, rsp, "addUser.jelly", "."); // send the user back to the listing page on success
      }
docs: Creates a user account. Used by admins.
  
  This version behaves differently from {@link #doCreateAccount(StaplerRequest, StaplerResponse)} in that
  this is someone creating another user.