code: def __call__(
      self,
      embeddings,
      k: int = 20,
  ):
      return self.index.retrieve_imgs(embeddings, k)
  
imports: import os
  from typing import List
  import faiss
  import numpy
  import torch
  from datasets import Dataset, load_dataset
  from PIL import Image
  from transformers import CLIPFeatureExtractor, CLIPModel, PretrainedConfig
  from diffusers import logging
label_desc: Use image node_id 10 for calling the Retriever obj's underlying member method code with example usage: obj.__call__(embeddings, k) and returns: self