code: @PUT
    @Path("{user}")
    @Consumes(MediaType.TEXT_PLAIN)
    public Response addUser(@PathParam("user") String username, @HeaderParam("Authorization") @DefaultValue("no token") String auth, String message) throws Exception {
      if(!this.isAuth(auth)) {
        throw new Exception("Unauthorized!");
      }
      if( realm != null ){
        AuthenticationManagerRequest req = new AuthenticationManagerRequest();
        req.setAccountName(username);
        req.setPassword(message);
        req.setRequestType(RequestType.ADD);
        
        sendMessage(req);
        return Response.created(new URI("")).build();
      }
      return Response.status(Status.NOT_FOUND).build();
    }
docs: Adds user credentials for access to this site only.
  
  @param username
  @param auth
  @param message
  @return
  @throws Exception