code: def test_def_insp(self):
      class SomeFoo(TestFixture):
          pass
  
      @inspection._inspects(SomeFoo)
      def insp_somefoo(subject):
          return {"insp": subject}
  
      somefoo = SomeFoo()
      insp = inspect(somefoo)
      assert insp["insp"] is somefoo
  
file_path: sqlalchemy/test/base/test_inspect.py
imports: from sqlalchemy import exc
  from sqlalchemy import inspect
  from sqlalchemy import inspection
  from sqlalchemy.testing import assert_raises_message
  from sqlalchemy.testing import eq_
  from sqlalchemy.testing import fixtures
label_desc: Use image node_id 2 for calling the TestInspection obj's underlying member method code with example usage: obj.test_def_insp() and returns: dict