code: def test_orm_join(self):
      from sqlalchemy.orm import join
  
      j = join(User, Address, User.addresses)
  
      j2 = serializer.loads(serializer.dumps(j, -1), users.metadata)
      assert j2.left is j.left
      assert j2.right is j.right
  
imports: from sqlalchemy import desc
  from sqlalchemy import ForeignKey
  from sqlalchemy import func
  from sqlalchemy import Integer
  from sqlalchemy import join
  from sqlalchemy import literal_column
  from sqlalchemy import MetaData
  from sqlalchemy import select
  from sqlalchemy import String
  from sqlalchemy import testing
  from sqlalchemy.ext import serializer
  from sqlalchemy.orm import aliased
  from sqlalchemy.orm import class_mapper
  from sqlalchemy.orm import column_property
  from sqlalchemy.orm import configure_mappers
  from sqlalchemy.orm import joinedload
  from sqlalchemy.orm import relationship
  from sqlalchemy.orm import scoped_session
  from sqlalchemy.orm import sessionmaker
  from sqlalchemy.testing import AssertsCompiledSQL
  from sqlalchemy.testing import eq_
  from sqlalchemy.testing import fixtures
  from sqlalchemy.testing.entities import ComparableEntity
  from sqlalchemy.testing.schema import Column
  from sqlalchemy.testing.schema import Table
label_desc: Use image node_id 13 for calling the SerializeTest obj's underlying member method code with example usage: obj.test_orm_join() without return types