code: def init_class_fixtures(cls):
      super(RestrictionsTestCase, cls).init_class_fixtures()
      cls.ASSET1 = cls.asset_finder.retrieve_asset(1)
      cls.ASSET2 = cls.asset_finder.retrieve_asset(2)
      cls.ASSET3 = cls.asset_finder.retrieve_asset(3)
      cls.ALL_ASSETS = [cls.ASSET1, cls.ASSET2, cls.ASSET3]
  
imports: import pandas
  from pandas.util.testing import assert_series_equal
  from six import iteritems
  from functools import partial
  from toolz import groupby
  from catalyst.finance.asset_restrictions import RESTRICTION_STATES, Restriction, HistoricalRestrictions, StaticRestrictions, SecurityListRestrictions, NoRestrictions, _UnionRestrictions
  from catalyst.testing import parameter_space
  from catalyst.testing.fixtures import WithDataPortal, CatalystTestCase
label_desc: Use image node_id 1 for calling the RestrictionsTestCase obj's underlying member method code with example usage: obj.init_class_fixtures(cls) without return types