code: def train_test_dummy_timestamp(pandas_dummy_timestamp):
      return train_test_split(
          pandas_dummy_timestamp, test_size=0.2, random_state=0
      )
  
file_path: recommenders/contrib/sarplus/python/tests/conftest.py
imports: import calendar
  import datetime
  import pandas
  import pytest
  from sklearn.model_selection import train_test_split
label_desc: Use image node_id 6 for calling a global function with example usage: train_test_dummy_timestamp(pandas_dummy_timestamp) and returns: train_test_split