docs: public CmsUser createUser(
          String name,
          String password,
          String description,
          String firstname,
          String lastname,
          String email)
      throws Exception {
  
          if (existsUser(name)) {
              m_shell.getOut().println(getMessages().key(Messages.GUI_SHELL_USER_ALREADY_EXISTS_1, name));
              return null;
          }
          CmsUser user = m_cms.createUser(name, password, description, new Hashtable<String, Object>());
          user.setEmail(email);
          user.setFirstname(firstname);
          user.setLastname(lastname);
          m_cms.writeUser(user);
          return user;
      }