code: def _start_workers(self, worker_group: WorkerGroup) -> Dict[int, Any]:
      # crate fake workers; make worker id equal to global rank
      ids = {}
      for worker in worker_group.workers:
          ids[worker.local_rank] = worker.global_rank
      self.start_workers_call_count += 1
      return ids
  
imports: import signal
  import unittest
  import uuid
  from typing import Any, Dict
  from unittest.mock import call, patch, MagicMock
  import torch.distributed.elastic.rendezvous.registry
  from torch.distributed.elastic.agent.server.api import RunResult, SimpleElasticAgent, WorkerGroup, WorkerSpec, WorkerState, _get_fq_hostname, _RoleInstanceInfo
  from torch.distributed.elastic.multiprocessing import SignalException
  from torch.distributed.elastic.multiprocessing.errors import ProcessFailure
  from torch.distributed.elastic.rendezvous import RendezvousHandler, RendezvousParameters
  from torch.distributed.elastic.utils.distributed import get_free_port
  from torch.testing._internal.common_utils import run_tests
label_desc: Use image node_id 3 for calling the TestAgent obj's underlying member method code with example usage: obj._start_workers(worker_group) and returns: ids