class_docstr: Assign version that can be exposed via RPC 
class_docstr_tok: ["Assign","version","that","can","be","exposed","via","RPC"]
code: def get_ntotal(self) -> int:
      return self.index.ntotal
  
file_path: faiss/contrib/client_server.py
imports: from multiprocessing.pool import ThreadPool
  import faiss
  from typing import List, Tuple
  from .None import rpc
label_desc: Use image node_id 3 for calling the SearchServer obj's underlying member method code with example usage: obj.get_ntotal() and returns: self