code: def on_world_tick(self, timestamp):
      self._server_clock.tick()
      self.server_fps = self._server_clock.get_fps()
      self.frame = timestamp.frame
      self.simulation_time = timestamp.elapsed_seconds
  
imports: from __future__ import print_function
  import glob
  import os
  import sys
  import signal
  import carla
  from carla import ColorConverter
  import argparse
  import logging
  import math
  import random
  import weakref
  from rss_sensor import RssSensor
  from rss_visualization import RssUnstructuredSceneVisualizer, RssBoundingBoxVisualizer, RssStateVisualizer
label_desc: Use image node_id 2 for calling the HUD obj's underlying member method code with example usage: obj.on_world_tick(timestamp) without return types