code: def test_get_item(self, superclass):
      class TestClass(superclass):
          API_KEY = 0
          API_VERSION = 0
          RESPONSE_TYPE = None  # To satisfy the Request ABC
          SCHEMA = Schema(("myobject", Int16))
  
      tc = TestClass(myobject=0)
      assert tc.get_item("myobject") == 0
      with pytest.raises(KeyError):
          tc.get_item("does-not-exist")
  
file_path: kafka-python/test/test_object_conversion.py
imports: from kafka.protocol.admin import Request
  from kafka.protocol.admin import Response
  from kafka.protocol.types import Schema
  from kafka.protocol.types import Array
  from kafka.protocol.types import Int16
  from kafka.protocol.types import String
  import pytest
label_desc: Use image node_id 1 for calling the TestObjectConversion obj's underlying member method code with example usage: obj.test_get_item(superclass) without return types