code: def second_of_minute(index: pd.DatetimeIndex) -> np.ndarray:
      return _normalize(index.second, num=60)
  
file_path: autogluon/timeseries/src/autogluon/timeseries/utils/datetime/time_features.py
imports: from typing import Callable, List
  import numpy
  import pandas
  from .base import norm_freq_str
label_desc: Use image node_id 10 for calling a global function with example usage: second_of_minute(index) and returns: _normalize