code: public List<SecurityUserBean> getUsers() {
          List<SecurityUserBean> users = new ArrayList<SecurityUserBean>();
          for (DuracloudUserDetails user : this.usersTable.values()) {
              SecurityUserBean bean = createUserBean(user);
              users.add(bean);
          }
          return users;
      }
docs: This method returns all of the non-system-defined users.
  
  @return