code: def get_filename(self, actor_id=None, frame=None):
      return self.get_filename_with_prefix(self.prefix, actor_id, frame)
  
imports: from .None import SmokeTest
  import carla
  import time
  import numpy
  import filecmp
  import shutil
  import os
label_desc: Use image node_id 12 for calling the Scenario obj's underlying member method code with example usage: obj.get_filename(actor_id, frame) and returns: self