code: def test_save_load_optional_components(self):
      super().test_save_load_optional_components(
          expected_max_difference=0.001
      )
  
imports: import random
  import unittest
  import numpy
  import torch
  from transformers import CLIPTextConfig, CLIPTextModel, CLIPTokenizer
  from diffusers import AutoencoderKL, DDIMScheduler, UNet3DConditionModel, VideoToVideoSDPipeline
  from diffusers.utils import is_xformers_available
  from diffusers.utils.testing_utils import enable_full_determinism, floats_tensor, is_flaky, nightly, numpy_cosine_similarity_distance, skip_mps, torch_device
  from ..pipeline_params import TEXT_GUIDED_IMAGE_VARIATION_BATCH_PARAMS, TEXT_GUIDED_IMAGE_VARIATION_PARAMS
  from ..test_pipelines_common import PipelineTesterMixin
label_desc: Use image node_id 4 for calling the VideoToVideoSDPipelineFastTests obj's underlying member method code with example usage: obj.test_save_load_optional_components() without return types