code: def validate_argmax_with_skipna(skipna, args, kwargs):
      
  
      skipna, args = process_skipna(skipna, args)
      validate_argmax(args, kwargs)
      return skipna
docs: If 'Series.argmax' is called via the 'numpy' library,
      the third parameter in its signature is 'out', which
      takes either an ndarray or 'None', so check if the
      'skipna' parameter is either an instance of ndarray or
      is None, since 'skipna' itself should be a boolean