code: private boolean existsUser(String name) {
  
          CmsUser user = null;
          try {
              user = m_cms.readUser(name);
          } catch (CmsException e) {
              // this will happen, if the user does not exist
          }
          return user != null;
      }
docs: Checks whether the given user already exists.<p>
  
  @param name the user name
  
  @return <code>true</code> if the given user already exists