class_docstr: test for [ticket:2885]
class_docstr_tok: ["test","for","[","ticket:2885","]"]
code: def setup_classes(cls):
      class Base(cls.Comparable):
          pass
  
      class Child(Base):
          pass
  
file_path: sqlalchemy/test/orm/inheritance/test_selects.py
imports: from sqlalchemy import ForeignKey
  from sqlalchemy import Integer
  from sqlalchemy import select
  from sqlalchemy import String
  from sqlalchemy.orm import Session
  from sqlalchemy.testing import eq_
  from sqlalchemy.testing import fixtures
  from sqlalchemy.testing.entities import ComparableEntity
  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 JoinFromSelectPersistenceTest obj's underlying member method code with example usage: obj.setup_classes(cls) without return types