code: def process(self, docs: DocumentArray, **kwargs):
      for doc in docs:
          doc.text = doc.text + "world"
          doc.tags["processed"] = True
  
file_path: jina/tests/helper.py
imports: from docarray import DocumentArray
  from jina import Executor, requests
  from jina.parsers import set_pod_parser
label_desc: Use image node_id 1 for calling the ProcessExecutor obj's underlying member method code with example usage: obj.process(docs) without return types