code: def __init__(self, *args, **kwargs):
      super().__init__(*args, **kwargs)
      self.store_path = os.path.join(self.workspace, "docarray.bin")
      if os.path.exists(self.store_path):
          self._da = DocumentArray.load_binary(self.store_path)
      else:
          self._da = DocumentArray()
  
file_path: jina/tests/k8s/test-stateful-executor/stateful_executor.py
imports: import os
  from jina import Executor, requests, DocumentArray
label_desc: Use image node_id 1 to create a new StatefulExecutor object from inherited base classes: Executor with example: obj = StatefulExecutor()