docs: def replace_dots_to_underscores_at_last(path):
      """
      Remove dot ('.') while a dot is treated as a special character in backends
  
      Args:
          path (str): A target path string
  
      Returns:
          str
      """
      if path == '':
          return path
      bits = path.split('/')
      bits[-1] = bits[-1].replace('.', '_')
      return '/'.join(bits)