code: def check_release_file_exists():
    
    release_file = get_heron_release_file()
  
    # if the file does not exist and is not a file
    if not os.path.isfile(release_file):
      Log.error("Required file not found: %s" % release_file)
      return False
  
    return True
docs: Check if the release.yaml file exists