code: def ses(es, index_name):
      return SignatureES(es=es, index=index_name, doc_type=DOC_TYPE)
  
imports: import pytest
  import os
  import hashlib
  from elasticsearch import Elasticsearch, ConnectionError, RequestError, NotFoundError
  from time import sleep
  from image_match.elasticsearch_driver import SignatureES
  from PIL import Image
label_desc: Use image node_id 5 for calling a global function with example usage: ses(es, index_name) and returns: SignatureES