code: def _remote_method(method, rref, *args, **kwargs):
      r"""
      a helper function to run method on the owner of rref and fetch back the
      result using RPC
      """
      args = [method, rref] + list(args)
      return rpc_sync(
          rref.owner(), _call_method, args=args, kwargs=kwargs
      )
  
imports: import numpy
  from itertools import count
  import torch
  import torch.distributed.rpc
  import torch.nn
  import torch.nn.functional
  import torch.optim
  from torch.distributed.rpc import RRef, rpc_sync, rpc_async, remote
  from torch.distributions import Categorical
  from torch.testing._internal.dist_utils import dist_init, worker_name
  from torch.testing._internal.distributed.rpc.rpc_agent_test_fixture import RpcAgentTestFixture
label_desc: Use image node_id 2 for calling a global function with example usage: _remote_method(method, rref) and returns: rpc_sync