code: def teardown_test(self):
      clear_mappers()
  
imports: from sqlalchemy import ForeignKey
  from sqlalchemy import Integer
  from sqlalchemy import MetaData
  from sqlalchemy import String
  from sqlalchemy import testing
  from sqlalchemy.orm import clear_mappers
  from sqlalchemy.orm import decl_api
  from sqlalchemy.orm import relationship
  from sqlalchemy.testing import assert_raises
  from sqlalchemy.testing import eq_
  from sqlalchemy.testing import fixtures
  from sqlalchemy.testing.entities import ComparableEntity
  from sqlalchemy.testing.entities import ComparableMixin
  from sqlalchemy.testing.fixtures import fixture_session
  from sqlalchemy.testing.schema import Column
  from sqlalchemy.testing.schema import Table
label_desc: Use image node_id 2 for calling the DeclarativeReflectionBase obj's underlying member method code with example usage: obj.teardown_test() without return types