code: public void login( String username, String password )
          throws LoginException
      {
          LoginHandler lh = Handlers.get( getServletContext() ).getLoginHandler();
          lh.login( getHandlerContext(), username, password );
      }
docs: Log in the user, using "weak" username/password authentication.  Goes through a custom {@link LoginHandler}, if
  one has been configured in beehive-netui-config.xml.
  
  @param username the user's login name
  @param password the user's password
  
  @exception LoginException if the authentication failed