code: def add(self, keys: Union[np.ndarray, int], vectors: np.ndarray):
      if isinstance(keys, int) or len(keys) == 1:
          return self.add_one(keys, vectors)
      else:
          return self.add_many(keys, vectors)
  
file_path: usearch/python/usearch/client.py
imports: from typing import Union, Optional, List
  import numpy
  from ucall.client import Client
  from usearch.index import Matches
label_desc: Use image node_id 4 for calling the IndexClient obj's underlying member method code with example usage: obj.add(keys, vectors) and returns: self, self