code: def test_2016_holidays(self):
      # good friday: 2016-03-25
      # christmas (observed)_: 2016-12-26
      # new years (observed): 2016-01-02
      for date in ["2016-03-25", "2016-12-26", "2016-01-02"]:
          self.assertFalse(
              self.calendar.is_session(pd.Timestamp(date, tz="UTC"))
          )
  
file_path: catalyst/tests/calendars/test_cme_calendar.py
imports: from unittest import TestCase
  import pandas
  from .test_trading_calendar import ExchangeCalendarTestBase
  from catalyst.utils.calendars.exchange_calendar_cme import CMEExchangeCalendar
label_desc: Use image node_id 1 for calling the CMECalendarTestCase obj's underlying member method code with example usage: obj.test_2016_holidays() without return types