code: def any(self, docs: DocumentArray, **kwargs):
      docs.append(Document(text="added"))
      return docs
  
imports: import json
  import os
  import pytest
  import yaml
  from jina import Document, DocumentArray, Executor, requests
  from jina.clients.request import request_generator
  from jina.constants import __default_executor__, __default_host__
  from jina.enums import PollingType
  from jina.excepts import RuntimeFailToStart
  from jina.orchestrate.deployments import Deployment
  from jina.parsers import set_deployment_parser, set_gateway_parser
  from jina.serve.networking.utils import send_request_sync
  from tests.unit.test_helper import MyDummyExecutor
label_desc: Use image node_id 2 for calling the DynamicPollingExecutor obj's underlying member method code with example usage: obj.any(docs) and returns: docs