code: def renderer_dim(self):
      return 8
  
imports: import gc
  import random
  import unittest
  import numpy
  import torch
  from transformers import CLIPImageProcessor, CLIPVisionConfig, CLIPVisionModel
  from diffusers import HeunDiscreteScheduler, PriorTransformer, ShapEImg2ImgPipeline
  from diffusers.pipelines.shap_e import ShapERenderer
  from diffusers.utils.testing_utils import floats_tensor, load_image, load_numpy, nightly, require_torch_gpu, torch_device
  from ..test_pipelines_common import PipelineTesterMixin, assert_mean_pixel_difference
label_desc: Use image node_id 4 for calling the ShapEImg2ImgPipelineFastTests obj's underlying member method code with example usage: obj.renderer_dim() and returns: int