code: def init_scene(self, prefix, settings=None, spectator_tr=None):
      self.prefix = prefix
      self.actor_list = []
      self.active = True
      self.snapshots = []
      self.sensor_list = []
      self.sensor_queue = Queue()
  
      self.reload_world(settings, spectator_tr)
      # workaround: give time to UE4 to clean memory after loading (old assets)
      time.sleep(5)
  
      # Init timestamp
      snapshot = self.world.get_snapshot()
      self.init_timestamp = {
          "frame0": snapshot.frame,
          "time0": snapshot.timestamp.elapsed_seconds,
      }
  
imports: from .None import SmokeTest
  import carla
  import time
  import numpy
  import filecmp
  import shutil
  import os
label_desc: Use image node_id 2 for calling the Scenario obj's underlying member method code with example usage: obj.init_scene(prefix, settings, spectator_tr) without return types