code: @Path("/")
      public SessionResource getSessionResource(@QueryParam("token") String authToken)
              throws GuacamoleException {
  
          // Return a resource exposing the retrieved session
          GuacamoleSession session = authenticationService.getGuacamoleSession(authToken);
          return sessionResourceFactory.create(session);
  
      }
docs: Retrieves a resource representing the GuacamoleSession associated with
  the given authentication token.
  
  @param authToken
  The authentication token that is used to authenticate the user
  having the session being exposed.
  
  @return
  A resource representing the GuacamoleSession associated with the
  given authentication token.
  
  @throws GuacamoleException
  If the authentication token is invalid.