class_docstr: Simple indexer class
class_docstr_tok: ["Simple","indexer","class"]
code: def close(self) -> None:
      self.logger.debug(
          f"Dumping {len(self._docs)} to {self._dump_location}"
      )
      self._docs.save_json(self._dump_location)
  
file_path: jina/tests/integration/crud/__init__.py
imports: import os
  from typing import Dict, Tuple
  import numpy
  from jina import Document, DocumentArray, Executor, requests
  from jina.logging.logger import JinaLogger
label_desc: Use image node_id 4 for calling the CrudIndexer obj's underlying member method code with example usage: obj.close() without return types