code: def _get_arg_names(f):
      """Get the argument names of a function.
  
      Args:
          f: A function.
  
      Returns:
          A list of argument names.
  
      """
      # `inspect.getargspec` or `inspect.getfullargspec` doesn't work properly for a wrapped function.
      # See https://hynek.me/articles/decorators#mangled-signatures for details.
      return list(inspect.signature(f).parameters.keys())
  
label_desc: Use image node_id 1 for calling a global function with example usage: _get_arg_names(f) and returns: list