code: def test_user_serde(obj_name: str, request: FixtureRequest) -> None:
      obj = request.getfixturevalue(obj_name)
      ser_data = sy.serialize(obj, to_bytes=True)
      assert isinstance(ser_data, bytes)
      deser_data = sy.deserialize(ser_data, from_bytes=True)
  
      assert isinstance(deser_data, type(obj))
      assert deser_data == obj
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_user_serde(obj_name, request) without return types