code: def get_document(id, index=INDEX_NAME, doc_type=DOC_TYPE, **kwargs):
      
      result = es_conn.get(index=index, doc_type=doc_type, id=id, **kwargs)
      return result['_source']
docs: Thin wrapper to get a single document by ID.
  
      https://elasticsearch-py.readthedocs.io/en/master/api.html#elasticsearch.Elasticsearch.get
      https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-get.html