code: def deserialize_from(self, index_file: str):
      logger.info("Loading index from %s", index_file)
      self.index = faiss.read_index(index_file)
      logger.info(
          "Loaded index of type %s and size %d",
          type(self.index),
          self.index.ntotal,
      )
  
imports: import os
  import logging
  import pickle
  import faiss
  import numpy
label_desc: Use image node_id 5 for calling the DenseIndexer obj's underlying member method code with example usage: obj.deserialize_from(index_file) without return types