code: def test_2016_holidays(self):
      # new years: jan 1
      # mlk: jan 18
      # presidents: feb 15
      # good friday: mar 25
      # mem day: may 30
      # independence day: july 4
      # labor day: sep 5
      # thanksgiving day: nov 24
      # christmas (observed): dec 26
      # new years (observed): jan 2 2017
      for day in [
          "2016-01-01",
          "2016-01-18",
          "2016-02-15",
          "2016-03-25",
          "2016-05-30",
          "2016-07-04",
          "2016-09-05",
          "2016-11-24",
          "2016-12-26",
          "2017-01-02",
      ]:
          self.assertFalse(
              self.calendar.is_session(pd.Timestamp(day, tz="UTC"))
          )
  
file_path: catalyst/tests/calendars/test_cfe_calendar.py
imports: from unittest import TestCase
  import pandas
  from .test_trading_calendar import ExchangeCalendarTestBase
  from catalyst.utils.calendars.exchange_calendar_cfe import CFEExchangeCalendar
label_desc: Use image node_id 1 for calling the CFECalendarTestCase obj's underlying member method code with example usage: obj.test_2016_holidays() without return types