code: def authed_context_guest_domain_client(
      guest_domain_client: SyftClient, worker: Worker
  ) -> AuthedServiceContext:
      verify_key: SyftVerifyKey = (
          guest_domain_client.credentials.verify_key
      )
      return AuthedServiceContext(credentials=verify_key, node=worker)
  
file_path: PySyft/packages/syft/tests/syft/request/fixtures.py
imports: import pytest
  from syft.client.client import SyftClient
  from syft.node.credentials import SyftVerifyKey
  from syft.node.worker import Worker
  from syft.service.context import AuthedServiceContext
  from syft.service.request.request_stash import RequestStash
  from syft.store.document_store import DocumentStore
label_desc: Use image node_id 2 for calling a global function with example usage: authed_context_guest_domain_client(guest_domain_client, worker) and returns: AuthedServiceContext