code: def retrieve_image_data(self):
      bucket = next(self.bucket_generator)
      bucket_key = (
          f"{config['visual_debugger']['redis_key_prefix']}:{bucket}"
      )
  
      response = self.redis_client.rpop(bucket_key)
  
      if response is not None:
          bucket = bucket_key.split(":")[-1]
  
          image_shape = self.redis_client.rpop(
              f"{config['visual_debugger']['redis_key_prefix']}:{bucket}:SHAPE"
          )
          image_shape = pickle.loads(image_shape)
  
          image_data = np.fromstring(response, dtype="float64").reshape(
              image_shape
          )
  
          return bucket, image_data
  
      return None
  
file_path: SerpentAI/serpent/visual_debugger/visual_debugger.py
imports: from redis import StrictRedis
  import skimage.io
  import numpy
  import pickle
  import itertools
  from serpent.config import config
label_desc: Use image node_id 3 for calling the VisualDebugger obj's underlying member method code with example usage: obj.retrieve_image_data() and returns: None, bucket,  image_data