code: def init_class_fixtures(cls):
      super(CalendarAliasTestCase, cls).init_class_fixtures()
      # Make a calendar once so that we don't spend time in every test
      # instantiating calendars.
      cls.dispatcher_kwargs = dict(
          calendars={"ICE": ICEExchangeCalendar()},
          calendar_factories={},
          aliases={
              "ICE_ALIAS": "ICE",
              "ICE_ALIAS_ALIAS": "ICE_ALIAS",
          },
      )
  
file_path: catalyst/tests/calendars/test_calendar_dispatcher.py
imports: from catalyst.errors import CalendarNameCollision, CyclicCalendarAlias, InvalidCalendarName
  from catalyst.testing import CatalystTestCase
  from catalyst.utils.calendars.calendar_utils import TradingCalendarDispatcher
  from catalyst.utils.calendars.exchange_calendar_ice import ICEExchangeCalendar
label_desc: Use image node_id 1 for calling the CalendarAliasTestCase obj's underlying member method code with example usage: obj.init_class_fixtures(cls) without return types